diff --git a/app/src/main/java/org/astraea/app/scenario/ScenarioMain.java b/app/src/main/java/org/astraea/app/scenario/ScenarioMain.java
index 6801716ce0..3f69f9c992 100644
--- a/app/src/main/java/org/astraea/app/scenario/ScenarioMain.java
+++ b/app/src/main/java/org/astraea/app/scenario/ScenarioMain.java
@@ -19,10 +19,10 @@
 import com.beust.jcommander.Parameter;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import org.astraea.common.Configuration;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.Admin;
 import org.astraea.common.argument.Argument;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.scenario.Scenario;
 
 public class ScenarioMain extends Argument {
diff --git a/app/src/main/java/org/astraea/app/web/BalancerHandler.java b/app/src/main/java/org/astraea/app/web/BalancerHandler.java
index 2b8332fd57..1320f07eb4 100644
--- a/app/src/main/java/org/astraea/app/web/BalancerHandler.java
+++ b/app/src/main/java/org/astraea/app/web/BalancerHandler.java
@@ -36,6 +36,7 @@
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import org.astraea.common.Configuration;
 import org.astraea.common.DataSize;
 import org.astraea.common.FutureUtils;
 import org.astraea.common.Utils;
@@ -51,7 +52,6 @@
 import org.astraea.common.balancer.algorithms.GreedyBalancer;
 import org.astraea.common.balancer.executor.RebalancePlanExecutor;
 import org.astraea.common.balancer.executor.StraightPlanExecutor;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.HasClusterCost;
 import org.astraea.common.cost.HasMoveCost;
 import org.astraea.common.cost.MoveCost;
diff --git a/app/src/test/java/org/astraea/app/web/BalancerHandlerTest.java b/app/src/test/java/org/astraea/app/web/BalancerHandlerTest.java
index 4d6ba369e2..8e700cc689 100644
--- a/app/src/test/java/org/astraea/app/web/BalancerHandlerTest.java
+++ b/app/src/test/java/org/astraea/app/web/BalancerHandlerTest.java
@@ -38,6 +38,7 @@
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
+import org.astraea.common.Configuration;
 import org.astraea.common.DataSize;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.Admin;
@@ -53,7 +54,6 @@
 import org.astraea.common.balancer.executor.StraightPlanExecutor;
 import org.astraea.common.balancer.log.ClusterLogAllocation;
 import org.astraea.common.cost.ClusterCost;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.HasClusterCost;
 import org.astraea.common.cost.HasMoveCost;
 import org.astraea.common.cost.MoveCost;
diff --git a/common/src/main/java/org/astraea/common/cost/Configuration.java b/common/src/main/java/org/astraea/common/Configuration.java
similarity index 99%
rename from common/src/main/java/org/astraea/common/cost/Configuration.java
rename to common/src/main/java/org/astraea/common/Configuration.java
index eedebbe81c..9fc2b136ff 100644
--- a/common/src/main/java/org/astraea/common/cost/Configuration.java
+++ b/common/src/main/java/org/astraea/common/Configuration.java
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.astraea.common.cost;
+package org.astraea.common;
 
 import java.util.Arrays;
 import java.util.Collections;
diff --git a/common/src/main/java/org/astraea/common/Utils.java b/common/src/main/java/org/astraea/common/Utils.java
index cf94fc72f5..f5c30d12ea 100644
--- a/common/src/main/java/org/astraea/common/Utils.java
+++ b/common/src/main/java/org/astraea/common/Utils.java
@@ -30,7 +30,6 @@
 import java.util.function.Supplier;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
-import org.astraea.common.cost.Configuration;
 
 public final class Utils {
 
diff --git a/common/src/main/java/org/astraea/common/balancer/algorithms/AlgorithmConfig.java b/common/src/main/java/org/astraea/common/balancer/algorithms/AlgorithmConfig.java
index bdaa37345a..d25f045033 100644
--- a/common/src/main/java/org/astraea/common/balancer/algorithms/AlgorithmConfig.java
+++ b/common/src/main/java/org/astraea/common/balancer/algorithms/AlgorithmConfig.java
@@ -25,10 +25,10 @@
 import java.util.function.BiPredicate;
 import java.util.function.Predicate;
 import java.util.function.Supplier;
+import org.astraea.common.Configuration;
 import org.astraea.common.admin.ClusterBean;
 import org.astraea.common.balancer.Balancer;
 import org.astraea.common.cost.ClusterCost;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.HasClusterCost;
 import org.astraea.common.cost.HasMoveCost;
 import org.astraea.common.cost.MoveCost;
diff --git a/common/src/main/java/org/astraea/common/cost/CostFunction.java b/common/src/main/java/org/astraea/common/cost/CostFunction.java
index 1ebac97bb8..06d2f1bd91 100644
--- a/common/src/main/java/org/astraea/common/cost/CostFunction.java
+++ b/common/src/main/java/org/astraea/common/cost/CostFunction.java
@@ -17,6 +17,7 @@
 package org.astraea.common.cost;
 
 import java.util.Optional;
+import org.astraea.common.Configuration;
 import org.astraea.common.metrics.collector.Fetcher;
 
 /**
diff --git a/common/src/main/java/org/astraea/common/partitioner/Dispatcher.java b/common/src/main/java/org/astraea/common/partitioner/Dispatcher.java
index b3b99c6751..6c60f9bf34 100644
--- a/common/src/main/java/org/astraea/common/partitioner/Dispatcher.java
+++ b/common/src/main/java/org/astraea/common/partitioner/Dispatcher.java
@@ -22,10 +22,10 @@
 import org.apache.kafka.clients.producer.Partitioner;
 import org.apache.kafka.clients.producer.Producer;
 import org.apache.kafka.common.Cluster;
+import org.astraea.common.Configuration;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.ClusterInfo;
 import org.astraea.common.admin.ReplicaInfo;
-import org.astraea.common.cost.Configuration;
 
 public interface Dispatcher extends Partitioner {
   /**
diff --git a/common/src/main/java/org/astraea/common/partitioner/PartitionerUtils.java b/common/src/main/java/org/astraea/common/partitioner/PartitionerUtils.java
index 235fa88ff8..2155eba9b3 100644
--- a/common/src/main/java/org/astraea/common/partitioner/PartitionerUtils.java
+++ b/common/src/main/java/org/astraea/common/partitioner/PartitionerUtils.java
@@ -22,7 +22,7 @@
 import java.util.Map;
 import java.util.Properties;
 import java.util.stream.Collectors;
-import org.astraea.common.cost.Configuration;
+import org.astraea.common.Configuration;
 
 /** do poisson for node's load situation */
 public class PartitionerUtils {
diff --git a/common/src/main/java/org/astraea/common/partitioner/StrictCostDispatcher.java b/common/src/main/java/org/astraea/common/partitioner/StrictCostDispatcher.java
index 4dc2a0e49c..8edc8a9f49 100644
--- a/common/src/main/java/org/astraea/common/partitioner/StrictCostDispatcher.java
+++ b/common/src/main/java/org/astraea/common/partitioner/StrictCostDispatcher.java
@@ -25,13 +25,13 @@
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
+import org.astraea.common.Configuration;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.ClusterInfo;
 import org.astraea.common.admin.NodeInfo;
 import org.astraea.common.admin.ReplicaInfo;
 import org.astraea.common.argument.DurationField;
 import org.astraea.common.cost.BrokerCost;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.HasBrokerCost;
 import org.astraea.common.cost.NodeLatencyCost;
 import org.astraea.common.metrics.collector.MetricCollector;
diff --git a/common/src/main/java/org/astraea/common/partitioner/smooth/SmoothWeightRoundRobinDispatcher.java b/common/src/main/java/org/astraea/common/partitioner/smooth/SmoothWeightRoundRobinDispatcher.java
index 3cb45af42f..69edfe5f28 100644
--- a/common/src/main/java/org/astraea/common/partitioner/smooth/SmoothWeightRoundRobinDispatcher.java
+++ b/common/src/main/java/org/astraea/common/partitioner/smooth/SmoothWeightRoundRobinDispatcher.java
@@ -31,13 +31,13 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import org.apache.kafka.common.Cluster;
+import org.astraea.common.Configuration;
 import org.astraea.common.Lazy;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.ClusterBean;
 import org.astraea.common.admin.ClusterInfo;
 import org.astraea.common.admin.NodeInfo;
 import org.astraea.common.admin.ReplicaInfo;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.NeutralIntegratedCost;
 import org.astraea.common.metrics.collector.MetricCollector;
 import org.astraea.common.partitioner.Dispatcher;
diff --git a/common/src/test/java/org/astraea/common/UtilsTest.java b/common/src/test/java/org/astraea/common/UtilsTest.java
index 36267e2933..a1ca19dde5 100644
--- a/common/src/test/java/org/astraea/common/UtilsTest.java
+++ b/common/src/test/java/org/astraea/common/UtilsTest.java
@@ -24,7 +24,6 @@
 import java.util.concurrent.ExecutionException;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.CostFunction;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
diff --git a/common/src/test/java/org/astraea/common/balancer/algorithms/GreedyBalancerTest.java b/common/src/test/java/org/astraea/common/balancer/algorithms/GreedyBalancerTest.java
index 76337b7b5a..6ea7d25674 100644
--- a/common/src/test/java/org/astraea/common/balancer/algorithms/GreedyBalancerTest.java
+++ b/common/src/test/java/org/astraea/common/balancer/algorithms/GreedyBalancerTest.java
@@ -20,10 +20,10 @@
 import java.util.Map;
 import java.util.UUID;
 import java.util.stream.IntStream;
+import org.astraea.common.Configuration;
 import org.astraea.common.Utils;
 import org.astraea.common.balancer.Balancer;
 import org.astraea.common.balancer.FakeClusterInfo;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.DecreasingCost;
 import org.astraea.common.metrics.BeanQuery;
 import org.astraea.common.metrics.MBeanClient;
diff --git a/common/src/test/java/org/astraea/common/cost/DecreasingCost.java b/common/src/test/java/org/astraea/common/cost/DecreasingCost.java
index 16f2857c01..1ee42bc5d2 100644
--- a/common/src/test/java/org/astraea/common/cost/DecreasingCost.java
+++ b/common/src/test/java/org/astraea/common/cost/DecreasingCost.java
@@ -16,6 +16,7 @@
  */
 package org.astraea.common.cost;
 
+import org.astraea.common.Configuration;
 import org.astraea.common.admin.ClusterBean;
 import org.astraea.common.admin.ClusterInfo;
 import org.astraea.common.admin.Replica;
diff --git a/common/src/test/java/org/astraea/common/partitioner/ConfigurationTest.java b/common/src/test/java/org/astraea/common/partitioner/ConfigurationTest.java
index 64531c5141..e7eece7950 100644
--- a/common/src/test/java/org/astraea/common/partitioner/ConfigurationTest.java
+++ b/common/src/test/java/org/astraea/common/partitioner/ConfigurationTest.java
@@ -19,7 +19,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import org.astraea.common.cost.Configuration;
+import org.astraea.common.Configuration;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
diff --git a/common/src/test/java/org/astraea/common/partitioner/DispatcherTest.java b/common/src/test/java/org/astraea/common/partitioner/DispatcherTest.java
index 9a5483b55e..173620ac06 100644
--- a/common/src/test/java/org/astraea/common/partitioner/DispatcherTest.java
+++ b/common/src/test/java/org/astraea/common/partitioner/DispatcherTest.java
@@ -35,12 +35,12 @@
 import org.apache.kafka.common.Cluster;
 import org.apache.kafka.common.metrics.stats.Value;
 import org.apache.kafka.common.serialization.ByteArraySerializer;
+import org.astraea.common.Configuration;
 import org.astraea.common.Header;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.Admin;
 import org.astraea.common.admin.ClusterInfo;
 import org.astraea.common.admin.ReplicaInfo;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.producer.Metadata;
 import org.astraea.common.producer.Producer;
 import org.astraea.common.producer.Record;
diff --git a/common/src/test/java/org/astraea/common/partitioner/PartitionerUtilsTest.java b/common/src/test/java/org/astraea/common/partitioner/PartitionerUtilsTest.java
index 2a76947650..6ddb43cbda 100644
--- a/common/src/test/java/org/astraea/common/partitioner/PartitionerUtilsTest.java
+++ b/common/src/test/java/org/astraea/common/partitioner/PartitionerUtilsTest.java
@@ -20,7 +20,7 @@
 
 import java.util.HashMap;
 import java.util.Map;
-import org.astraea.common.cost.Configuration;
+import org.astraea.common.Configuration;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
diff --git a/common/src/test/java/org/astraea/common/partitioner/StrictCostDispatcherTest.java b/common/src/test/java/org/astraea/common/partitioner/StrictCostDispatcherTest.java
index 63af8476b3..bcaffc27c6 100644
--- a/common/src/test/java/org/astraea/common/partitioner/StrictCostDispatcherTest.java
+++ b/common/src/test/java/org/astraea/common/partitioner/StrictCostDispatcherTest.java
@@ -23,6 +23,7 @@
 import java.util.Optional;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
+import org.astraea.common.Configuration;
 import org.astraea.common.Utils;
 import org.astraea.common.admin.ClusterBean;
 import org.astraea.common.admin.ClusterInfo;
@@ -30,7 +31,6 @@
 import org.astraea.common.admin.ReplicaInfo;
 import org.astraea.common.cost.BrokerCost;
 import org.astraea.common.cost.BrokerInputCost;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.cost.HasBrokerCost;
 import org.astraea.common.cost.NodeThroughputCost;
 import org.astraea.common.cost.ReplicaLeaderCost;
diff --git a/connector/src/main/java/org/astraea/connector/SourceConnector.java b/connector/src/main/java/org/astraea/connector/SourceConnector.java
index 88605dac7a..ea4d900980 100644
--- a/connector/src/main/java/org/astraea/connector/SourceConnector.java
+++ b/connector/src/main/java/org/astraea/connector/SourceConnector.java
@@ -20,8 +20,8 @@
 import java.util.Map;
 import java.util.stream.Collectors;
 import org.apache.kafka.common.config.ConfigDef;
+import org.astraea.common.Configuration;
 import org.astraea.common.VersionUtils;
-import org.astraea.common.cost.Configuration;
 
 public abstract class SourceConnector extends org.apache.kafka.connect.source.SourceConnector {
 
diff --git a/connector/src/main/java/org/astraea/connector/SourceTask.java b/connector/src/main/java/org/astraea/connector/SourceTask.java
index 2a0aa36386..998be30c88 100644
--- a/connector/src/main/java/org/astraea/connector/SourceTask.java
+++ b/connector/src/main/java/org/astraea/connector/SourceTask.java
@@ -22,8 +22,8 @@
 import java.util.stream.Collectors;
 import org.apache.kafka.connect.data.Schema;
 import org.apache.kafka.connect.source.SourceRecord;
+import org.astraea.common.Configuration;
 import org.astraea.common.VersionUtils;
-import org.astraea.common.cost.Configuration;
 import org.astraea.common.producer.Metadata;
 import org.astraea.common.producer.Record;
 
diff --git a/connector/src/test/java/org/astraea/connector/SourceConnectorTest.java b/connector/src/test/java/org/astraea/connector/SourceConnectorTest.java
index a9114d5815..b2c5766fbe 100644
--- a/connector/src/test/java/org/astraea/connector/SourceConnectorTest.java
+++ b/connector/src/test/java/org/astraea/connector/SourceConnectorTest.java
@@ -19,7 +19,7 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
-import org.astraea.common.cost.Configuration;
+import org.astraea.common.Configuration;
 import org.astraea.common.http.HttpExecutor;
 import org.astraea.common.json.TypeRef;
 import org.astraea.common.producer.Record;