diff --git a/example/src/main/scala/com/vesoft/nebula/examples/connector/Nebula2Nebula.scala b/example/src/main/scala/com/vesoft/nebula/examples/connector/Nebula2Nebula.scala
index 40eda062..2b0f0f8b 100644
--- a/example/src/main/scala/com/vesoft/nebula/examples/connector/Nebula2Nebula.scala
+++ b/example/src/main/scala/com/vesoft/nebula/examples/connector/Nebula2Nebula.scala
@@ -36,7 +36,7 @@ import scala.collection.mutable.ListBuffer
   * --conf spark.executor.extraClassPath=./  \
   * --jars commons-cli-1.4.jar \
   * --class com.vesoft.nebula.examples.connector.Nebula2Nebula example-3.0-SNAPSHOT-jar-with-dependencies.jar \
-  * -sourceMeta "192.168.8.171:9559" -sourceSpace "source"  -limit 2 -targetMeta "192.168.8.171:9559" -targetGraph "192.168.8.171:9669" -targetSpace "target" -batch 2
+  * -sourceMeta "192.168.8.171:9559" -sourceSpace "source"  -limit 2 -targetMeta "192.168.8.171:9559" -targetGraph "192.168.8.171:9669" -targetSpace "target" -batch 2 -timeout 50000 -u root -passwd nebula
   *
   */
 object Nebula2Nebula {
@@ -55,18 +55,38 @@ object Nebula2Nebula {
 
     val sourceMetaOption =
       new Option("sourceMeta", "sourceMetaAddress", true, "source nebulagraph metad address")
+    sourceMetaOption.setRequired(true)
     val sourceSpaceOption =
       new Option("sourceSpace", "sourceSpace", true, "source nebulagraph space name")
+    sourceSpaceOption.setRequired(true)
     val limitOption =
       new Option("limit", "limit", true, "records for one reading request for reading")
+    limitOption.setRequired(true)
     val targetMetaOption =
       new Option("targetMeta", "targetMetaAddress", true, "target nebulagraph metad address")
+    targetMetaOption.setRequired(true)
     val targetGraphOption =
       new Option("targetGraph", "targetGraphAddress", true, "target nebulagraph graphd address")
+    targetGraphOption.setRequired(true)
     val targetSpaceOption =
       new Option("targetSpace", "targetSpace", true, "target nebulagraph space name")
-    val batchOption         = new Option("batch", "batch", true, "batch size for one insert request")
+    targetSpaceOption.setRequired(true)
+    val batchOption = new Option("batch", "batch", true, "batch size for one insert request")
+    batchOption.setRequired(true)
     val writeParallelOption = new Option("p", "parallel", true, "parallel for writing data")
+    writeParallelOption.setRequired(true)
+    val timeoutOption = new Option("timeout", "timeout", true, "timeout for java client");
+    timeoutOption.setRequired(true)
+    val userOption = new Option("u", "user", true, "user")
+    userOption.setRequired(true)
+    val passwdOption = new Option("passwd", "password", true, "password")
+    passwdOption.setRequired(true)
+
+    // filter out some tags /edges
+    val excludeTagsOption =
+      new Option("excludeTags", "excludeTags", true, "filter out these tags, separate with `,`")
+    val excludeEdgesOption =
+      new Option("excludeEdges", "excludeEdges", true, "filter out these edges, separate with `,`")
 
     val options = new Options
     options.addOption(sourceMetaOption)
@@ -77,13 +97,19 @@ object Nebula2Nebula {
     options.addOption(targetSpaceOption)
     options.addOption(batchOption)
     options.addOption(writeParallelOption)
+    options.addOption(timeoutOption)
+    options.addOption(userOption)
+    options.addOption(passwdOption)
+    options.addOption(excludeTagsOption)
+    options.addOption(excludeEdgesOption)
 
     var cli: CommandLine             = null
     val cliParser: CommandLineParser = new DefaultParser
     val helpFormatter                = new HelpFormatter
 
-    try cli = cliParser.parse(options, args)
-    catch {
+    try {
+      cli = cliParser.parse(options, args)
+    } catch {
       case e: ParseException =>
         helpFormatter.printHelp(">>>> options", options)
         e.printStackTrace()
@@ -98,6 +124,15 @@ object Nebula2Nebula {
     val targetSpace: String     = cli.getOptionValue("targetSpace")
     val batch: Int              = cli.getOptionValue("batch").toInt
     val parallel: Int           = cli.getOptionValue("p").toInt
+    val timeout: Int            = cli.getOptionValue("timeout").toInt
+    val user: String            = cli.getOptionValue("u")
+    val passed: String          = cli.getOptionValue("passwd")
+    val excludeTags: List[String] =
+      if (cli.hasOption("excludeTags")) cli.getOptionValue("excludeTags").split(",").toList
+      else List()
+    val excludeEdges: List[String] =
+      if (cli.hasOption("excludeEdges")) cli.getOptionValue("excludeEdges").split(",").toList
+      else List()
 
     // common config
     val sourceConnectConfig =
@@ -105,6 +140,7 @@ object Nebula2Nebula {
         .builder()
         .withMetaAddress(sourceMetaAddr)
         .withConenctionRetry(2)
+        .withTimeout(timeout)
         .build()
 
     val targetConnectConfig =
@@ -112,13 +148,21 @@ object Nebula2Nebula {
         .builder()
         .withMetaAddress(targetMetaAddr)
         .withGraphAddress(targetGraphAddr)
+        .withTimeout(timeout)
         .withConenctionRetry(2)
         .build()
 
     val metaHostAndPort = sourceMetaAddr.split(":")
-    val (tags, edges, partitions) =
+    var (tags, edges, partitions) =
       getTagsAndEdges(metaHostAndPort(0), metaHostAndPort(1).toInt, sourceSpace)
 
+    if (excludeTags.nonEmpty) {
+      tags = tags.dropWhile(ele => excludeTags.contains(ele))
+    }
+    if (excludeEdges.nonEmpty) {
+      edges = edges.dropWhile(ele => excludeEdges.contains(ele))
+    }
+
     tags.foreach(tag => {
       syncTag(spark,
               sourceConnectConfig,
@@ -129,7 +173,9 @@ object Nebula2Nebula {
               targetSpace,
               batch,
               tag,
-              parallel)
+              parallel,
+              user,
+              passed)
     })
 
     edges.foreach(edge => {
@@ -142,9 +188,10 @@ object Nebula2Nebula {
                targetSpace,
                batch,
                edge,
-               parallel)
+               parallel,
+               user,
+               passed)
     })
-
   }
 
   def getTagsAndEdges(metaHost: String,
@@ -176,7 +223,9 @@ object Nebula2Nebula {
               targetSpace: String,
               batch: Int,
               tag: String,
-              writeParallel: Int): Unit = {
+              writeParallel: Int,
+              user: String,
+              passwd: String): Unit = {
     val nebulaReadVertexConfig: ReadNebulaConfig = ReadNebulaConfig
       .builder()
       .withSpace(sourceSpace)
@@ -194,6 +243,8 @@ object Nebula2Nebula {
     val nebulaWriteVertexConfig: WriteNebulaVertexConfig = WriteNebulaVertexConfig
       .builder()
       .withSpace(targetSpace)
+      .withUser(user)
+      .withPasswd(passwd)
       .withTag(tag)
       .withVidField("_vertexId")
       .withBatch(batch)
@@ -211,7 +262,9 @@ object Nebula2Nebula {
                targetSpace: String,
                batch: Int,
                edge: String,
-               writeParallel: Int): Unit = {
+               writeParallel: Int,
+               user: String,
+               passwd: String): Unit = {
     val nebulaReadEdgeConfig: ReadNebulaConfig = ReadNebulaConfig
       .builder()
       .withSpace(sourceSpace)
@@ -229,6 +282,8 @@ object Nebula2Nebula {
     val nebulaWriteEdgeConfig: WriteNebulaEdgeConfig = WriteNebulaEdgeConfig
       .builder()
       .withSpace(targetSpace)
+      .withUser(user)
+      .withPasswd(passwd)
       .withEdge(edge)
       .withSrcIdField("_srcId")
       .withDstIdField("_dstId")