diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
index 56bb0164ec1..0061e751e50 100755
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip
\ No newline at end of file
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.6.0/apache-maven-3.6.0-bin.zip
\ No newline at end of file
diff --git a/codestyle/checkstyle.xml b/codestyle/checkstyle.xml
index fa4d735a785..9624bbf38fa 100644
--- a/codestyle/checkstyle.xml
+++ b/codestyle/checkstyle.xml
@@ -9,7 +9,7 @@
 
     <!-- TreeWalker Checks -->
     <module name="TreeWalker">
-        <module name="SuppressWarningsHolder" />
+        <module name="SuppressWarningsHolder"/>
 
         <module name="AvoidStarImport"/>
         <module name="AvoidEscapedUnicodeCharacters">
diff --git a/dubbo-all/pom.xml b/dubbo-all/pom.xml
index a4a0b5cc3cd..31b175aeffe 100644
--- a/dubbo-all/pom.xml
+++ b/dubbo-all/pom.xml
@@ -19,11 +19,10 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>dubbo</artifactId>
-    <version>2.7.1-SNAPSHOT</version>
     <packaging>jar</packaging>
     <name>dubbo-all</name>
     <description>The all in one project of dubbo</description>
@@ -143,6 +142,13 @@
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-jsonrpc</artifactId>
+            <version>${project.version}</version>
+            <scope>compile</scope>
+            <optional>true</optional>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-rpc-rmi</artifactId>
@@ -332,6 +338,13 @@
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-avro</artifactId>
+            <version>${project.version}</version>
+            <scope>compile</scope>
+            <optional>true</optional>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-serialization-protostuff</artifactId>
@@ -491,6 +504,7 @@
                                     <include>org.apache.dubbo:dubbo-rpc-api</include>
                                     <include>org.apache.dubbo:dubbo-rpc-dubbo</include>
                                     <include>org.apache.dubbo:dubbo-rpc-injvm</include>
+                                    <include>org.apache.dubbo:dubbo-rpc-jsonrpc</include>
                                     <include>org.apache.dubbo:dubbo-rpc-rmi</include>
                                     <include>org.apache.dubbo:dubbo-rpc-hessian</include>
                                     <include>org.apache.dubbo:dubbo-rpc-http</include>
@@ -523,6 +537,7 @@
                                     <include>org.apache.dubbo:dubbo-serialization-hessian2</include>
                                     <include>org.apache.dubbo:dubbo-serialization-fst</include>
                                     <include>org.apache.dubbo:dubbo-serialization-kryo</include>
+                                    <include>org.apache.dubbo:dubbo-serialization-avro</include>
                                     <include>org.apache.dubbo:dubbo-serialization-jdk</include>
                                     <include>org.apache.dubbo:dubbo-serialization-protostuff</include>
                                     <include>org.apache.dubbo:dubbo-configcenter-api</include>
diff --git a/dubbo-bom/pom.xml b/dubbo-bom/pom.xml
index 145495bdeb6..2ecf2398aff 100644
--- a/dubbo-bom/pom.xml
+++ b/dubbo-bom/pom.xml
@@ -1,4 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
@@ -6,12 +22,11 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
 
     <groupId>org.apache.dubbo</groupId>
     <artifactId>dubbo-bom</artifactId>
-    <version>2.7.1-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>dubbo-bom</name>
@@ -158,6 +173,11 @@
                 <artifactId>dubbo-rpc-injvm</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.dubbo</groupId>
+                <artifactId>dubbo-rpc-jsonrpc</artifactId>
+                <version>${project.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-rpc-rmi</artifactId>
@@ -303,6 +323,11 @@
                 <artifactId>dubbo-serialization-protostuff</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.dubbo</groupId>
+                <artifactId>dubbo-serialization-avro</artifactId>
+                <version>${project.version}</version>
+            </dependency>
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-compatible</artifactId>
diff --git a/dubbo-cluster/pom.xml b/dubbo-cluster/pom.xml
index 58d0367d873..ff59682d847 100644
--- a/dubbo-cluster/pom.xml
+++ b/dubbo-cluster/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-cluster</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-common/pom.xml b/dubbo-common/pom.xml
index bd3347f5240..98ecc9b87b2 100644
--- a/dubbo-common/pom.xml
+++ b/dubbo-common/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-common</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-compatible/pom.xml b/dubbo-compatible/pom.xml
index 43d14f95104..3826189591a 100644
--- a/dubbo-compatible/pom.xml
+++ b/dubbo-compatible/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-compatible</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-config/dubbo-config-api/pom.xml b/dubbo-config/dubbo-config-api/pom.xml
index 19c7aca7bb7..3a4584d90c3 100644
--- a/dubbo-config/dubbo-config-api/pom.xml
+++ b/dubbo-config/dubbo-config-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-config</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-config-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-config/dubbo-config-spring/pom.xml b/dubbo-config/dubbo-config-spring/pom.xml
index 988715baf4f..04a8223bcb7 100644
--- a/dubbo-config/dubbo-config-spring/pom.xml
+++ b/dubbo-config/dubbo-config-spring/pom.xml
@@ -1,132 +1,132 @@
-<!--
-  Licensed to the Apache Software Foundation (ASF) under one or more
-  contributor license agreements.  See the NOTICE file distributed with
-  this work for additional information regarding copyright ownership.
-  The ASF licenses this file to You under the Apache License, Version 2.0
-  (the "License"); you may not use this file except in compliance with
-  the License.  You may obtain a copy of the License at
-
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>org.apache.dubbo</groupId>
-        <artifactId>dubbo-config</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
-    </parent>
-    <artifactId>dubbo-config-spring</artifactId>
-    <packaging>jar</packaging>
-    <name>${project.artifactId}</name>
-    <description>The spring config module of dubbo project</description>
-    <properties>
-        <skip_maven_deploy>false</skip_maven_deploy>
-    </properties>
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-config-api</artifactId>
-            <version>${project.parent.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-beans</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-web</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-context</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>javax.servlet</groupId>
-            <artifactId>javax.servlet-api</artifactId>
-            <scope>provided</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-registry-default</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-monitor-default</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-rpc-dubbo</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-rpc-rmi</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-rpc-injvm</artifactId>
-            <version>${project.parent.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-remoting-netty4</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-serialization-hessian2</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>javax.validation</groupId>
-            <artifactId>validation-api</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.hibernate</groupId>
-            <artifactId>hibernate-validator</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.glassfish</groupId>
-            <artifactId>javax.el</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-tx</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>4.12</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.tomcat.embed</groupId>
-            <artifactId>tomcat-embed-core</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-</project>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.dubbo</groupId>
+        <artifactId>dubbo-config</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <artifactId>dubbo-config-spring</artifactId>
+    <packaging>jar</packaging>
+    <name>${project.artifactId}</name>
+    <description>The spring config module of dubbo project</description>
+    <properties>
+        <skip_maven_deploy>false</skip_maven_deploy>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-config-api</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-beans</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-registry-default</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-monitor-default</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-dubbo</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-rmi</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-injvm</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-remoting-netty4</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-hessian2</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hibernate</groupId>
+            <artifactId>hibernate-validator</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.el</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-tx</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.tomcat.embed</groupId>
+            <artifactId>tomcat-embed-core</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/dubbo-config/pom.xml b/dubbo-config/pom.xml
index d1f16c146de..bb8518fea95 100644
--- a/dubbo-config/pom.xml
+++ b/dubbo-config/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-config</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-configcenter/dubbo-configcenter-api/pom.xml b/dubbo-configcenter/dubbo-configcenter-api/pom.xml
index 7f2715e5b66..bab80eb0fdc 100644
--- a/dubbo-configcenter/dubbo-configcenter-api/pom.xml
+++ b/dubbo-configcenter/dubbo-configcenter-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-configcenter</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-configcenter-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-configcenter/dubbo-configcenter-apollo/pom.xml b/dubbo-configcenter/dubbo-configcenter-apollo/pom.xml
index 040b0eb33a2..26d2e88fb28 100644
--- a/dubbo-configcenter/dubbo-configcenter-apollo/pom.xml
+++ b/dubbo-configcenter/dubbo-configcenter-apollo/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-configcenter</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-configcenter-apollo</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-configcenter/dubbo-configcenter-consul/pom.xml b/dubbo-configcenter/dubbo-configcenter-consul/pom.xml
index 2a7580e837e..d40ed494df0 100644
--- a/dubbo-configcenter/dubbo-configcenter-consul/pom.xml
+++ b/dubbo-configcenter/dubbo-configcenter-consul/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-configcenter</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-configcenter/dubbo-configcenter-etcd/pom.xml b/dubbo-configcenter/dubbo-configcenter-etcd/pom.xml
index 60efc8e4bb9..c90c8e2fcff 100644
--- a/dubbo-configcenter/dubbo-configcenter-etcd/pom.xml
+++ b/dubbo-configcenter/dubbo-configcenter-etcd/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-configcenter</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-configcenter/dubbo-configcenter-zookeeper/pom.xml b/dubbo-configcenter/dubbo-configcenter-zookeeper/pom.xml
index 5c84f6515ac..9f028ce05c7 100644
--- a/dubbo-configcenter/dubbo-configcenter-zookeeper/pom.xml
+++ b/dubbo-configcenter/dubbo-configcenter-zookeeper/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-configcenter</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-configcenter-zookeeper</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-configcenter/pom.xml b/dubbo-configcenter/pom.xml
index 92f727d2321..c6fb983bb72 100644
--- a/dubbo-configcenter/pom.xml
+++ b/dubbo-configcenter/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-configcenter</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-container/dubbo-container-api/pom.xml b/dubbo-container/dubbo-container-api/pom.xml
index 2c1e9100af5..0014da4c2a8 100644
--- a/dubbo-container/dubbo-container-api/pom.xml
+++ b/dubbo-container/dubbo-container-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-container</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-container-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-log4j/pom.xml b/dubbo-container/dubbo-container-log4j/pom.xml
index be5a1733a36..a83b66165f5 100644
--- a/dubbo-container/dubbo-container-log4j/pom.xml
+++ b/dubbo-container/dubbo-container-log4j/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-container</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-container-log4j</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-logback/pom.xml b/dubbo-container/dubbo-container-logback/pom.xml
index 9a1aa47eda2..a6f70145fad 100644
--- a/dubbo-container/dubbo-container-logback/pom.xml
+++ b/dubbo-container/dubbo-container-logback/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-container</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-container-logback</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-spring/pom.xml b/dubbo-container/dubbo-container-spring/pom.xml
index 83298634f27..c7762cd4189 100644
--- a/dubbo-container/dubbo-container-spring/pom.xml
+++ b/dubbo-container/dubbo-container-spring/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-container</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-container-spring</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-container/pom.xml b/dubbo-container/pom.xml
index 932899488ec..b61d3cf1b90 100644
--- a/dubbo-container/pom.xml
+++ b/dubbo-container/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-container</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-consumer/pom.xml b/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-consumer/pom.xml
index 58e260ed592..7e38ba1b435 100644
--- a/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-consumer/pom.xml
+++ b/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-consumer/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo-annotation</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-provider/pom.xml b/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-provider/pom.xml
index bf6bc8fd9df..9e807ce5d48 100644
--- a/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-provider/pom.xml
+++ b/dubbo-demo/dubbo-demo-annotation/dubbo-demo-annotation-provider/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo-annotation</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-demo/dubbo-demo-annotation/pom.xml b/dubbo-demo/dubbo-demo-annotation/pom.xml
index f94870dc563..df69c4c424b 100644
--- a/dubbo-demo/dubbo-demo-annotation/pom.xml
+++ b/dubbo-demo/dubbo-demo-annotation/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/pom.xml b/dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/pom.xml
index 947537667b5..fd0f62631e4 100644
--- a/dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/pom.xml
+++ b/dubbo-demo/dubbo-demo-api/dubbo-demo-api-consumer/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo-api</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/pom.xml b/dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/pom.xml
index d2dd9af1c85..095b43093fa 100644
--- a/dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/pom.xml
+++ b/dubbo-demo/dubbo-demo-api/dubbo-demo-api-provider/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo-api</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-demo/dubbo-demo-api/pom.xml b/dubbo-demo/dubbo-demo-api/pom.xml
index b9088fc4d37..944c76dd505 100644
--- a/dubbo-demo/dubbo-demo-api/pom.xml
+++ b/dubbo-demo/dubbo-demo-api/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/dubbo-demo/dubbo-demo-interface/pom.xml b/dubbo-demo/dubbo-demo-interface/pom.xml
index f6376c91578..a5c4b0517de 100644
--- a/dubbo-demo/dubbo-demo-interface/pom.xml
+++ b/dubbo-demo/dubbo-demo-interface/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-demo</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-demo-interface</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-consumer/pom.xml b/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-consumer/pom.xml
index 84874591535..7eb47eef78e 100644
--- a/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-consumer/pom.xml
+++ b/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-consumer/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-demo-xml</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-demo-xml-consumer</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-provider/pom.xml b/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-provider/pom.xml
index fbd0f041497..81cfe6c9d70 100644
--- a/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-provider/pom.xml
+++ b/dubbo-demo/dubbo-demo-xml/dubbo-demo-xml-provider/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-demo-xml</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-demo-xml-provider</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-xml/pom.xml b/dubbo-demo/dubbo-demo-xml/pom.xml
index fbbcae942b8..97aa01023bf 100644
--- a/dubbo-demo/dubbo-demo-xml/pom.xml
+++ b/dubbo-demo/dubbo-demo-xml/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>dubbo-demo</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/dubbo-demo/pom.xml b/dubbo-demo/pom.xml
index 77d59aebcdd..d46e2d99df9 100644
--- a/dubbo-demo/pom.xml
+++ b/dubbo-demo/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-demo</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-dependencies-bom/pom.xml b/dubbo-dependencies-bom/pom.xml
index 245b6ff61fc..135184f2692 100644
--- a/dubbo-dependencies-bom/pom.xml
+++ b/dubbo-dependencies-bom/pom.xml
@@ -1,19 +1,19 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  ~ Licensed to the Apache Software Foundation (ASF) under one or more
-  ~ contributor license agreements.  See the NOTICE file distributed with
-  ~ this work for additional information regarding copyright ownership.
-  ~ The ASF licenses this file to You under the Apache License, Version 2.0
-  ~ (the "License"); you may not use this file except in compliance with
-  ~ the License.  You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
   -->
 
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
@@ -24,12 +24,12 @@
         <groupId>org.apache</groupId>
         <artifactId>apache</artifactId>
         <version>21</version>
-        <relativePath></relativePath>
+        <relativePath />
     </parent>
 
     <groupId>org.apache.dubbo</groupId>
     <artifactId>dubbo-dependencies-bom</artifactId>
-    <version>2.7.1-SNAPSHOT</version>
+    <version>${revision}</version>
     <packaging>pom</packaging>
 
     <name>dubbo-dependencies-bom</name>
@@ -118,6 +118,7 @@
         <kryo_version>4.0.1</kryo_version>
         <kryo_serializers_version>0.42</kryo_serializers_version>
         <fst_version>2.48-jdk-6</fst_version>
+        <avro_version>1.8.2</avro_version>
         <apollo_client_version>1.1.1</apollo_client_version>
         <snakeyaml_version>1.20</snakeyaml_version>
         <commons_lang3_version>3.8.1</commons_lang3_version>
@@ -144,13 +145,17 @@
 
         <metrics_version>2.0.1</metrics_version>
         <gson_version>2.8.5</gson_version>
+        <jsonrpc_version>1.2.0</jsonrpc_version>
+        <portlet_version>2.0</portlet_version>
+        <maven_flatten_version>1.1.0</maven_flatten_version>
+        <revision>3.0.0-SNAPSHOT</revision>
     </properties>
 
     <dependencyManagement>
         <dependencies>
             <!-- Common libs -->
             <dependency>
-<groupId>org.springframework</groupId>
+                <groupId>org.springframework</groupId>
                 <artifactId>spring-framework-bom</artifactId>
                 <version>${spring_version}</version>
                 <type>pom</type>
@@ -308,6 +313,11 @@
                 <artifactId>fst</artifactId>
                 <version>${fst_version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.avro</groupId>
+                <artifactId>avro</artifactId>
+                <version>${avro_version}</version>
+            </dependency>
             <dependency>
                 <groupId>io.protostuff</groupId>
                 <artifactId>protostuff-core</artifactId>
@@ -535,9 +545,49 @@
                 <artifactId>gson</artifactId>
                 <version>${gson_version}</version>
             </dependency>
+            <dependency>
+                <groupId>com.github.briandilley.jsonrpc4j</groupId>
+                <artifactId>jsonrpc4j</artifactId>
+                <version>${jsonrpc_version}</version>
+            </dependency>
+            <dependency>
+                <groupId>javax.portlet</groupId>
+                <artifactId>portlet-api</artifactId>
+                <version>${portlet_version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <version>${maven_flatten_version}</version>
+                <configuration>
+                    <updatePomFile>true</updatePomFile>
+                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>flatten</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>flatten.clean</id>
+                        <phase>clean</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
     <profiles>
         <profile>
             <id>release</id>
diff --git a/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml b/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
index 18a3f2abcc7..1ff9f7f6caa 100644
--- a/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
+++ b/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
@@ -16,29 +16,32 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.apache</groupId>
         <artifactId>apache</artifactId>
         <version>21</version>
-        <relativePath></relativePath>
+        <relativePath />
     </parent>
 
     <groupId>org.apache.dubbo</groupId>
     <artifactId>dubbo-dependencies-zookeeper</artifactId>
-    <version>2.7.1-SNAPSHOT</version>
+    <version>${revision}</version>
     <packaging>pom</packaging>
 
+    <properties>
+        <revision>3.0.0-SNAPSHOT</revision>
+        <maven_flatten_version>1.1.0</maven_flatten_version>
+    </properties>
+
     <dependencyManagement>
         <dependencies>
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-dependencies-bom</artifactId>
-                <version>2.7.1-SNAPSHOT</version>
+                <version>${project.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -56,6 +59,36 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <version>${maven_flatten_version}</version>
+                <configuration>
+                    <updatePomFile>true</updatePomFile>
+                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>flatten</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>flatten.clean</id>
+                        <phase>clean</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
     <profiles>
         <profile>
             <id>release</id>
@@ -77,5 +110,4 @@
             </build>
         </profile>
     </profiles>
-
 </project>
diff --git a/dubbo-dependencies/pom.xml b/dubbo-dependencies/pom.xml
index 6d144449d5f..27cea95f42e 100644
--- a/dubbo-dependencies/pom.xml
+++ b/dubbo-dependencies/pom.xml
@@ -1,28 +1,25 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <!--
-  ~ Licensed to the Apache Software Foundation (ASF) under one or more
-  ~ contributor license agreements.  See the NOTICE file distributed with
-  ~ this work for additional information regarding copyright ownership.
-  ~ The ASF licenses this file to You under the Apache License, Version 2.0
-  ~ (the "License"); you may not use this file except in compliance with
-  ~ the License.  You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dubbo-parent</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-distribution/pom.xml b/dubbo-distribution/pom.xml
index b018cec4e50..51f486e80cc 100644
--- a/dubbo-distribution/pom.xml
+++ b/dubbo-distribution/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-distribution</artifactId>
     <packaging>pom</packaging>
@@ -110,6 +110,11 @@
             <artifactId>dubbo-rpc-injvm</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-jsonrpc</artifactId>
+            <version>${project.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-rpc-rmi</artifactId>
@@ -240,6 +245,11 @@
             <artifactId>dubbo-serialization-protostuff</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-avro</artifactId>
+            <version>${project.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo</artifactId>
@@ -267,7 +277,7 @@
                         <version>3.1.0</version>
                         <executions>
                             <execution>
-                                <id>bin-release</id>
+                                <id>bin</id>
                                 <phase>package</phase>
                                 <goals>
                                     <goal>single</goal>
@@ -279,7 +289,7 @@
                                 </configuration>
                             </execution>
                             <execution>
-                                <id>source-release</id>
+                                <id>src</id>
                                 <phase>package</phase>
                                 <goals>
                                     <goal>single</goal>
diff --git a/dubbo-distribution/src/assembly/source-release.xml b/dubbo-distribution/src/assembly/source-release.xml
index 434377bdd3a..344d31c1efa 100644
--- a/dubbo-distribution/src/assembly/source-release.xml
+++ b/dubbo-distribution/src/assembly/source-release.xml
@@ -50,6 +50,7 @@
                 <exclude>**/.mvn/**</exclude>
                 <exclude>**/*.jar</exclude>
                 <exclude>**/mvnw*</exclude>
+                <exclude>**/.flattened-pom.xml</exclude>
             </excludes>
         </fileSet>
     </fileSets>
diff --git a/dubbo-filter/dubbo-filter-cache/pom.xml b/dubbo-filter/dubbo-filter-cache/pom.xml
index bec6067478d..8241d23f457 100644
--- a/dubbo-filter/dubbo-filter-cache/pom.xml
+++ b/dubbo-filter/dubbo-filter-cache/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-filter</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-filter-cache</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-filter/dubbo-filter-validation/pom.xml b/dubbo-filter/dubbo-filter-validation/pom.xml
index 9ce481061d2..51d70aead19 100644
--- a/dubbo-filter/dubbo-filter-validation/pom.xml
+++ b/dubbo-filter/dubbo-filter-validation/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-filter</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-filter-validation</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-filter/pom.xml b/dubbo-filter/pom.xml
index f9851412296..efb95ab8cb0 100644
--- a/dubbo-filter/pom.xml
+++ b/dubbo-filter/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-filter</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-metadata-report/dubbo-metadata-definition/pom.xml b/dubbo-metadata-report/dubbo-metadata-definition/pom.xml
index 09dc860fb60..6e9a58fa818 100644
--- a/dubbo-metadata-report/dubbo-metadata-definition/pom.xml
+++ b/dubbo-metadata-report/dubbo-metadata-definition/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-metadata-report</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-metadata-report/dubbo-metadata-report-api/pom.xml b/dubbo-metadata-report/dubbo-metadata-report-api/pom.xml
index 6244d0407f8..b892598c800 100644
--- a/dubbo-metadata-report/dubbo-metadata-report-api/pom.xml
+++ b/dubbo-metadata-report/dubbo-metadata-report-api/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-metadata-report</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-metadata-report/dubbo-metadata-report-consul/pom.xml b/dubbo-metadata-report/dubbo-metadata-report-consul/pom.xml
index ad02eaedda6..ad3eb4946e7 100644
--- a/dubbo-metadata-report/dubbo-metadata-report-consul/pom.xml
+++ b/dubbo-metadata-report/dubbo-metadata-report-consul/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dubbo-metadata-report</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-metadata-report/dubbo-metadata-report-redis/pom.xml b/dubbo-metadata-report/dubbo-metadata-report-redis/pom.xml
index 6f5d418e28f..419c77f8839 100644
--- a/dubbo-metadata-report/dubbo-metadata-report-redis/pom.xml
+++ b/dubbo-metadata-report/dubbo-metadata-report-redis/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-metadata-report</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-metadata-report/dubbo-metadata-report-zookeeper/pom.xml b/dubbo-metadata-report/dubbo-metadata-report-zookeeper/pom.xml
index 4f7feb1b22b..a276f83b3bf 100644
--- a/dubbo-metadata-report/dubbo-metadata-report-zookeeper/pom.xml
+++ b/dubbo-metadata-report/dubbo-metadata-report-zookeeper/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-metadata-report</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-metadata-report/pom.xml b/dubbo-metadata-report/pom.xml
index aa14d56122e..6d47af47374 100644
--- a/dubbo-metadata-report/pom.xml
+++ b/dubbo-metadata-report/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-parent</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-monitor/dubbo-monitor-api/pom.xml b/dubbo-monitor/dubbo-monitor-api/pom.xml
index 5d649dc1fa4..b5c21aba7e2 100644
--- a/dubbo-monitor/dubbo-monitor-api/pom.xml
+++ b/dubbo-monitor/dubbo-monitor-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-monitor</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-monitor-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-monitor/dubbo-monitor-default/pom.xml b/dubbo-monitor/dubbo-monitor-default/pom.xml
index a7ae0ecd00c..f426214f2c7 100644
--- a/dubbo-monitor/dubbo-monitor-default/pom.xml
+++ b/dubbo-monitor/dubbo-monitor-default/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-monitor</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-monitor-default</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-monitor/pom.xml b/dubbo-monitor/pom.xml
index 6e0171d303c..a6d21a0a556 100644
--- a/dubbo-monitor/pom.xml
+++ b/dubbo-monitor/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-monitor</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-plugin/dubbo-qos/pom.xml b/dubbo-plugin/dubbo-qos/pom.xml
index 717c20ceac1..0df5abb8c65 100644
--- a/dubbo-plugin/dubbo-qos/pom.xml
+++ b/dubbo-plugin/dubbo-qos/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-plugin</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-plugin/pom.xml b/dubbo-plugin/pom.xml
index e5427760240..44b6fe0dafe 100644
--- a/dubbo-plugin/pom.xml
+++ b/dubbo-plugin/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-parent</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-registry/dubbo-registry-api/pom.xml b/dubbo-registry/dubbo-registry-api/pom.xml
index d96df68084f..5a707d0686b 100644
--- a/dubbo-registry/dubbo-registry-api/pom.xml
+++ b/dubbo-registry/dubbo-registry-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-registry</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-consul/pom.xml b/dubbo-registry/dubbo-registry-consul/pom.xml
index 38647f259ac..ec32dbe4340 100644
--- a/dubbo-registry/dubbo-registry-consul/pom.xml
+++ b/dubbo-registry/dubbo-registry-consul/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dubbo-registry</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-registry/dubbo-registry-default/pom.xml b/dubbo-registry/dubbo-registry-default/pom.xml
index 73bda5ceab8..37df8f2ef72 100644
--- a/dubbo-registry/dubbo-registry-default/pom.xml
+++ b/dubbo-registry/dubbo-registry-default/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-registry</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry-default</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-etcd3/pom.xml b/dubbo-registry/dubbo-registry-etcd3/pom.xml
index 00b0ae53902..6d9d60cbd57 100644
--- a/dubbo-registry/dubbo-registry-etcd3/pom.xml
+++ b/dubbo-registry/dubbo-registry-etcd3/pom.xml
@@ -16,14 +16,12 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <artifactId>dubbo-registry</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
 
     <artifactId>dubbo-registry-etcd3</artifactId>
diff --git a/dubbo-registry/dubbo-registry-multicast/pom.xml b/dubbo-registry/dubbo-registry-multicast/pom.xml
index 61a8669e8fb..643159bddd4 100644
--- a/dubbo-registry/dubbo-registry-multicast/pom.xml
+++ b/dubbo-registry/dubbo-registry-multicast/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-registry</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry-multicast</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-nacos/pom.xml b/dubbo-registry/dubbo-registry-nacos/pom.xml
new file mode 100644
index 00000000000..e2a9d02e149
--- /dev/null
+++ b/dubbo-registry/dubbo-registry-nacos/pom.xml
@@ -0,0 +1,150 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>org.apache.dubbo</groupId>
+        <artifactId>dubbo-registry</artifactId>
+        <version>${revision}</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>dubbo-registry-nacos</artifactId>
+    <name>${project.artifactId}</name>
+    <description>The Nacos registry module of Dubbo project</description>
+
+    <properties>
+        <nacos.version>1.0.0-RC3</nacos.version>
+    </properties>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-registry-api</artifactId>
+            <version>${project.version}</version>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-common</artifactId>
+            <version>${project.version}</version>
+            <optional>true</optional>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba.nacos</groupId>
+            <artifactId>nacos-client</artifactId>
+            <version>${nacos.version}</version>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- Test Libraries -->
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-config-api</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-hessian2</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-config-spring</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-dubbo</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-remoting-netty4</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- REST support dependencies -->
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-rest</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-jaxrs</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-client</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-netty4</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-jackson-provider</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-jaxb-provider</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/dubbo-registry/dubbo-registry-redis/pom.xml b/dubbo-registry/dubbo-registry-redis/pom.xml
index 7644e1ca85a..8144089f35a 100644
--- a/dubbo-registry/dubbo-registry-redis/pom.xml
+++ b/dubbo-registry/dubbo-registry-redis/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-registry</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry-redis</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-zookeeper/pom.xml b/dubbo-registry/dubbo-registry-zookeeper/pom.xml
index 2c565d8b1a8..3aa13d3fcfd 100644
--- a/dubbo-registry/dubbo-registry-zookeeper/pom.xml
+++ b/dubbo-registry/dubbo-registry-zookeeper/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-registry</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry-zookeeper</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-registry/pom.xml b/dubbo-registry/pom.xml
index 33a329bb0fd..c9c3441ca25 100644
--- a/dubbo-registry/pom.xml
+++ b/dubbo-registry/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-registry</artifactId>
     <packaging>pom</packaging>
@@ -36,5 +36,6 @@
         <module>dubbo-registry-redis</module>
         <module>dubbo-registry-consul</module>
         <module>dubbo-registry-etcd3</module>
+        <module>dubbo-registry-nacos</module>
     </modules>
 </project>
diff --git a/dubbo-remoting/dubbo-remoting-api/pom.xml b/dubbo-remoting/dubbo-remoting-api/pom.xml
index ec278e96e02..6d35681d9fe 100644
--- a/dubbo-remoting/dubbo-remoting-api/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-etcd3/pom.xml b/dubbo-remoting/dubbo-remoting-etcd3/pom.xml
index 768052f6b1d..2f827a9fbb3 100644
--- a/dubbo-remoting/dubbo-remoting-etcd3/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-etcd3/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <artifactId>dubbo-remoting</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-etcd3</artifactId>
     <packaging>jar</packaging>
@@ -49,4 +49,4 @@
     </dependencies>
 
 
-</project>
\ No newline at end of file
+</project>
diff --git a/dubbo-remoting/dubbo-remoting-grizzly/pom.xml b/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
index f740422a7ae..cd185367fd9 100644
--- a/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-grizzly</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-http/pom.xml b/dubbo-remoting/dubbo-remoting-http/pom.xml
index 85ea81dff12..9937a191294 100644
--- a/dubbo-remoting/dubbo-remoting-http/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-http/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-http</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-mina/pom.xml b/dubbo-remoting/dubbo-remoting-mina/pom.xml
index a10aacc52d2..4808a1781c3 100644
--- a/dubbo-remoting/dubbo-remoting-mina/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-mina/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-mina</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-netty/pom.xml b/dubbo-remoting/dubbo-remoting-netty/pom.xml
index cfa826279e5..761d37b5160 100644
--- a/dubbo-remoting/dubbo-remoting-netty/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-netty/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-netty</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-netty4/pom.xml b/dubbo-remoting/dubbo-remoting-netty4/pom.xml
index e17cfe185f7..10d7f26fe14 100644
--- a/dubbo-remoting/dubbo-remoting-netty4/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-netty4/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <artifactId>dubbo-remoting</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-remoting/dubbo-remoting-p2p/pom.xml b/dubbo-remoting/dubbo-remoting-p2p/pom.xml
index 238398e4a16..f9476062881 100644
--- a/dubbo-remoting/dubbo-remoting-p2p/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-p2p/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-p2p</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml b/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
index 24b14e9bd7e..497bc83f94e 100644
--- a/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-remoting</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting-zookeeper</artifactId>
     <packaging>jar</packaging>
@@ -35,10 +35,12 @@
             <version>${project.parent.version}</version>
         </dependency>
         <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-dependencies-zookeeper</artifactId>
-            <version>${project.parent.version}</version>
-            <type>pom</type>
+            <groupId>org.apache.curator</groupId>
+            <artifactId>curator-recipes</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.zookeeper</groupId>
+            <artifactId>zookeeper</artifactId>
         </dependency>
         <dependency>
             <groupId>org.apache.curator</groupId>
diff --git a/dubbo-remoting/pom.xml b/dubbo-remoting/pom.xml
index fd17dbf0cd6..c95fbfad2e6 100644
--- a/dubbo-remoting/pom.xml
+++ b/dubbo-remoting/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-remoting</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-api/pom.xml b/dubbo-rpc/dubbo-rpc-api/pom.xml
index 06d17aec9e9..aae1c05b6ed 100644
--- a/dubbo-rpc/dubbo-rpc-api/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-api/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-api</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-dubbo/pom.xml b/dubbo-rpc/dubbo-rpc-dubbo/pom.xml
index 290f627b36f..dc6cd2295f8 100644
--- a/dubbo-rpc/dubbo-rpc-dubbo/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-dubbo/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-dubbo</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-hessian/pom.xml b/dubbo-rpc/dubbo-rpc-hessian/pom.xml
index 0eed79d254a..99ef99da3cc 100644
--- a/dubbo-rpc/dubbo-rpc-hessian/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-hessian/pom.xml
@@ -1,62 +1,62 @@
-<!--
-  Licensed to the Apache Software Foundation (ASF) under one or more
-  contributor license agreements.  See the NOTICE file distributed with
-  this work for additional information regarding copyright ownership.
-  The ASF licenses this file to You under the Apache License, Version 2.0
-  (the "License"); you may not use this file except in compliance with
-  the License.  You may obtain a copy of the License at
-
-      http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-  -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <parent>
-        <groupId>org.apache.dubbo</groupId>
-        <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
-    </parent>
-    <artifactId>dubbo-rpc-hessian</artifactId>
-    <packaging>jar</packaging>
-    <name>${project.artifactId}</name>
-    <description>The hessian rpc module of dubbo project</description>
-    <properties>
-        <skip_maven_deploy>false</skip_maven_deploy>
-    </properties>
-    <dependencies>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-rpc-api</artifactId>
-            <version>${project.parent.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-remoting-http</artifactId>
-            <version>${project.parent.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.caucho</groupId>
-            <artifactId>hessian</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.dubbo</groupId>
-            <artifactId>dubbo-serialization-jdk</artifactId>
-            <version>${project.parent.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.dubbo</groupId>
+        <artifactId>dubbo-rpc</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <artifactId>dubbo-rpc-hessian</artifactId>
+    <packaging>jar</packaging>
+    <name>${project.artifactId}</name>
+    <description>The hessian rpc module of dubbo project</description>
+    <properties>
+        <skip_maven_deploy>false</skip_maven_deploy>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-api</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-remoting-http</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.caucho</groupId>
+            <artifactId>hessian</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-jdk</artifactId>
+            <version>${project.parent.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
 </project>
\ No newline at end of file
diff --git a/dubbo-rpc/dubbo-rpc-http/pom.xml b/dubbo-rpc/dubbo-rpc-http/pom.xml
index 5ab4d25d156..6681a9a6321 100644
--- a/dubbo-rpc/dubbo-rpc-http/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-http/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-http</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-injvm/pom.xml b/dubbo-rpc/dubbo-rpc-injvm/pom.xml
index 9a3de8e080e..53ed2ffb4ea 100644
--- a/dubbo-rpc/dubbo-rpc-injvm/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-injvm/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-injvm</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-jsonrpc/pom.xml b/dubbo-rpc/dubbo-rpc-jsonrpc/pom.xml
new file mode 100644
index 00000000000..c5b4e890389
--- /dev/null
+++ b/dubbo-rpc/dubbo-rpc-jsonrpc/pom.xml
@@ -0,0 +1,61 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>dubbo-rpc</artifactId>
+        <groupId>org.apache.dubbo</groupId>
+        <version>${revision}</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>dubbo-rpc-jsonrpc</artifactId>
+
+    <description>The JSON-RPC module of dubbo project</description>
+
+    <properties>
+        <skip_maven_deploy>false</skip_maven_deploy>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-api</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-remoting-http</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.github.briandilley.jsonrpc4j</groupId>
+            <artifactId>jsonrpc4j</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>javax.portlet</groupId>
+            <artifactId>portlet-api</artifactId>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/dubbo-rpc/dubbo-rpc-memcached/pom.xml b/dubbo-rpc/dubbo-rpc-memcached/pom.xml
index 6544e9c9a18..bcfeea67e6b 100644
--- a/dubbo-rpc/dubbo-rpc-memcached/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-memcached/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-memcached</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-redis/pom.xml b/dubbo-rpc/dubbo-rpc-redis/pom.xml
index 056b9013979..123273215fd 100644
--- a/dubbo-rpc/dubbo-rpc-redis/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-redis/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-redis</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-rest/pom.xml b/dubbo-rpc/dubbo-rpc-rest/pom.xml
index 126b26d3a0d..c1d9e4e727b 100644
--- a/dubbo-rpc/dubbo-rpc-rest/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-rest/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>org.apache.dubbo</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
 	</parent>
 	<artifactId>dubbo-rpc-rest</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-rmi/pom.xml b/dubbo-rpc/dubbo-rpc-rmi/pom.xml
index bb5efb4ed33..7e560b2cb97 100644
--- a/dubbo-rpc/dubbo-rpc-rmi/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-rmi/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-rmi</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-rsocket/pom.xml b/dubbo-rpc/dubbo-rpc-rsocket/pom.xml
index c4f749c470e..f11823452ba 100644
--- a/dubbo-rpc/dubbo-rpc-rsocket/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-rsocket/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-rsocket</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-thrift/pom.xml b/dubbo-rpc/dubbo-rpc-thrift/pom.xml
index 5e106b2ba3c..d6e20ed95e2 100644
--- a/dubbo-rpc/dubbo-rpc-thrift/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-thrift/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-thrift</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-webservice/pom.xml b/dubbo-rpc/dubbo-rpc-webservice/pom.xml
index a859b58546c..70078f8f1a9 100644
--- a/dubbo-rpc/dubbo-rpc-webservice/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-webservice/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-rpc</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc-webservice</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-rpc/pom.xml b/dubbo-rpc/pom.xml
index d175da8f6fe..1065b987072 100644
--- a/dubbo-rpc/pom.xml
+++ b/dubbo-rpc/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-rpc</artifactId>
     <packaging>pom</packaging>
@@ -32,6 +32,7 @@
         <module>dubbo-rpc-api</module>
         <module>dubbo-rpc-dubbo</module>
         <module>dubbo-rpc-injvm</module>
+        <module>dubbo-rpc-jsonrpc</module>
         <module>dubbo-rpc-rmi</module>
         <module>dubbo-rpc-hessian</module>
         <module>dubbo-rpc-http</module>
diff --git a/dubbo-serialization/dubbo-serialization-api/pom.xml b/dubbo-serialization/dubbo-serialization-api/pom.xml
index cd1ff42939e..62cf6f3105f 100644
--- a/dubbo-serialization/dubbo-serialization-api/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-api/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-api</artifactId>
     <packaging>jar</packaging>
@@ -35,25 +35,5 @@ limitations under the License.
             <artifactId>dubbo-common</artifactId>
             <version>${project.parent.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.alibaba</groupId>
-            <artifactId>hessian-lite</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>com.alibaba</groupId>
-            <artifactId>fastjson</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>com.esotericsoftware</groupId>
-            <artifactId>kryo</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>de.javakaffee</groupId>
-            <artifactId>kryo-serializers</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>de.ruedigermoeller</groupId>
-            <artifactId>fst</artifactId>
-        </dependency>
     </dependencies>
 </project>
\ No newline at end of file
diff --git a/dubbo-serialization/dubbo-serialization-avro/pom.xml b/dubbo-serialization/dubbo-serialization-avro/pom.xml
new file mode 100644
index 00000000000..908c49eb2fe
--- /dev/null
+++ b/dubbo-serialization/dubbo-serialization-avro/pom.xml
@@ -0,0 +1,44 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.dubbo</groupId>
+        <artifactId>dubbo-serialization</artifactId>
+        <version>${revision}</version>
+    </parent>
+    <artifactId>dubbo-serialization-avro</artifactId>
+    <packaging>jar</packaging>
+    <name>${project.artifactId}</name>
+    <description>The avro serialization module of dubbo project</description>
+    <properties>
+        <skip_maven_deploy>false</skip_maven_deploy>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-api</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.avro</groupId>
+            <artifactId>avro</artifactId>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/dubbo-serialization/dubbo-serialization-fastjson/pom.xml b/dubbo-serialization/dubbo-serialization-fastjson/pom.xml
index 92dbbec8820..6553abd7ecf 100644
--- a/dubbo-serialization/dubbo-serialization-fastjson/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-fastjson/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-fastjson</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-serialization/dubbo-serialization-fst/pom.xml b/dubbo-serialization/dubbo-serialization-fst/pom.xml
index 4332453a907..1f2936e8dd4 100644
--- a/dubbo-serialization/dubbo-serialization-fst/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-fst/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-fst</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-serialization/dubbo-serialization-hessian2/pom.xml b/dubbo-serialization/dubbo-serialization-hessian2/pom.xml
index b5ba85a2953..9363daca432 100644
--- a/dubbo-serialization/dubbo-serialization-hessian2/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-hessian2/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-hessian2</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-serialization/dubbo-serialization-jdk/pom.xml b/dubbo-serialization/dubbo-serialization-jdk/pom.xml
index 1f78b9a9c1b..21df9f487e0 100644
--- a/dubbo-serialization/dubbo-serialization-jdk/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-jdk/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-jdk</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-serialization/dubbo-serialization-kryo/pom.xml b/dubbo-serialization/dubbo-serialization-kryo/pom.xml
index 4ebf59bea3d..86b5083a067 100644
--- a/dubbo-serialization/dubbo-serialization-kryo/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-kryo/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-serialization</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization-kryo</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-serialization/dubbo-serialization-protostuff/pom.xml b/dubbo-serialization/dubbo-serialization-protostuff/pom.xml
index ab3a2a5f390..7d9e2c8e87d 100644
--- a/dubbo-serialization/dubbo-serialization-protostuff/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-protostuff/pom.xml
@@ -20,7 +20,7 @@ limitations under the License.
     <parent>
         <artifactId>dubbo-serialization</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
 
     <artifactId>dubbo-serialization-protostuff</artifactId>
diff --git a/dubbo-serialization/dubbo-serialization-test/pom.xml b/dubbo-serialization/dubbo-serialization-test/pom.xml
index 392dc335d7d..2c44dbc3480 100644
--- a/dubbo-serialization/dubbo-serialization-test/pom.xml
+++ b/dubbo-serialization/dubbo-serialization-test/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <artifactId>dubbo-serialization</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -67,5 +67,10 @@
             <artifactId>dubbo-serialization-api</artifactId>
             <version>${project.parent.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-avro</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
     </dependencies>
 </project>
diff --git a/dubbo-serialization/pom.xml b/dubbo-serialization/pom.xml
index 9cfb7d72da5..1c6de9d406c 100644
--- a/dubbo-serialization/pom.xml
+++ b/dubbo-serialization/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-serialization</artifactId>
     <packaging>pom</packaging>
@@ -36,6 +36,7 @@
         <module>dubbo-serialization-fst</module>
         <module>dubbo-serialization-jdk</module>
         <module>dubbo-serialization-protostuff</module>
+        <module>dubbo-serialization-avro</module>
         <module>dubbo-serialization-test</module>
     </modules>
 </project>
diff --git a/dubbo-test/dubbo-test-compatibility/dubbo-test-spring3/pom.xml b/dubbo-test/dubbo-test-compatibility/dubbo-test-spring3/pom.xml
index db01ae3917d..0295aaa3990 100644
--- a/dubbo-test/dubbo-test-compatibility/dubbo-test-spring3/pom.xml
+++ b/dubbo-test/dubbo-test-compatibility/dubbo-test-spring3/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <artifactId>dubbo-test-compatibility</artifactId>
         <groupId>org.apache.dubbo</groupId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dubbo-test/dubbo-test-compatibility/pom.xml b/dubbo-test/dubbo-test-compatibility/pom.xml
index c6d2e1ee550..d3c178d0685 100644
--- a/dubbo-test/dubbo-test-compatibility/pom.xml
+++ b/dubbo-test/dubbo-test-compatibility/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-test</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-test-compatibility</artifactId>
     <packaging>pom</packaging>
diff --git a/dubbo-test/dubbo-test-integration/pom.xml b/dubbo-test/dubbo-test-integration/pom.xml
index 51552d47e8d..f9e0794d290 100644
--- a/dubbo-test/dubbo-test-integration/pom.xml
+++ b/dubbo-test/dubbo-test-integration/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-test</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-test-integration</artifactId>
     <packaging>jar</packaging>
diff --git a/dubbo-test/pom.xml b/dubbo-test/pom.xml
index 0cdf2a68fab..48ea790e215 100644
--- a/dubbo-test/pom.xml
+++ b/dubbo-test/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.dubbo</groupId>
         <artifactId>dubbo-parent</artifactId>
-        <version>2.7.1-SNAPSHOT</version>
+        <version>${revision}</version>
     </parent>
     <artifactId>dubbo-test</artifactId>
     <packaging>pom</packaging>
@@ -94,6 +94,10 @@
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-remoting-http</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-rpc-jsonrpc</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-rpc-dubbo</artifactId>
@@ -198,10 +202,13 @@
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-serialization-kryo</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.apache.dubbo</groupId>
+            <artifactId>dubbo-serialization-avro</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo-serialization-jdk</artifactId>
-            <version>2.7.1-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>org.hibernate</groupId>
diff --git a/pom.xml b/pom.xml
index 6220d015df8..efd92e5fb70 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,7 +27,7 @@
 
     <groupId>org.apache.dubbo</groupId>
     <artifactId>dubbo-parent</artifactId>
-    <version>2.7.1-SNAPSHOT</version>
+    <version>${revision}</version>
     <packaging>pom</packaging>
 
     <name>${project.artifactId}</name>
@@ -120,10 +120,12 @@
         <maven_jetty_version>9.4.11.v20180605</maven_jetty_version>
         <maven_checkstyle_version>3.0.0</maven_checkstyle_version>
         <maven_jacoco_version>0.8.2</maven_jacoco_version>
+        <maven_flatten_version>1.1.0</maven_flatten_version>
         <apache-rat-plugin.version>0.12</apache-rat-plugin.version>
         <arguments/>
         <checkstyle.skip>true</checkstyle.skip>
         <rat.skip>true</rat.skip>
+        <revision>3.0.0-SNAPSHOT</revision>
     </properties>
 
     <modules>
@@ -154,7 +156,7 @@
             <dependency>
                 <groupId>org.apache.dubbo</groupId>
                 <artifactId>dubbo-dependencies-bom</artifactId>
-                <version>2.7.1-SNAPSHOT</version>
+                <version>${project.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
@@ -470,6 +472,31 @@
                     <arguments>${arguments}</arguments>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <version>${maven_flatten_version}</version>
+                <configuration>
+                    <updatePomFile>true</updatePomFile>
+                    <flattenMode>resolveCiFriendliesOnly</flattenMode>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>flatten</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>flatten.clean</id>
+                        <phase>clean</phase>
+                        <goals>
+                            <goal>clean</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
 
         <pluginManagement>