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POApache Sqoop communication link failure
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copied!<p>I get the following error when I connect to mysql on one cluster (<code>aaaaaa1</code>) and sqooop on a different server (<code>aaaaaa2</code>), despite creating a table in mySql with full permissions granted to the other cluster.</p> <p>Please help me to determine what is the cause of this issue. Thanks!</p> <pre><code>**$sqoop import --connect jdbc:mysql://(address of mysql):11000/sqoopdemo --table widgets** 12/10/12 10:42:23 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset. 12/10/12 10:42:23 INFO tool.CodeGenTool: Beginning code generation 12/10/12 10:42:23 ERROR manager.SqlManager: Error executing statement: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2369) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2153) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:207) at com.cloudera.sqoop.manager.SqlManager.makeConnection(SqlManager.java:684) at com.cloudera.sqoop.manager.GenericJdbcManager.getConnection(GenericJdbcManager.java:53) at com.cloudera.sqoop.manager.SqlManager.execute(SqlManager.java:473) at com.cloudera.sqoop.manager.SqlManager.execute(SqlManager.java:496) at com.cloudera.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:195) at com.cloudera.sqoop.manager.SqlManager.getColumnTypes(SqlManager.java:179) at com.cloudera.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:116) at com.cloudera.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1226) at com.cloudera.sqoop.orm.ClassWriter.generate(ClassWriter.java:1051) at com.cloudera.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:84) at com.cloudera.sqoop.tool.ImportTool.importTable(ImportTool.java:370) at com.cloudera.sqoop.tool.ImportTool.run(ImportTool.java:456) at com.cloudera.sqoop.Sqoop.run(Sqoop.java:146) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at com.cloudera.sqoop.Sqoop.runSqoop(Sqoop.java:182) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:221) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:230) at com.cloudera.sqoop.Sqoop.main(Sqoop.java:239) Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:529) at java.net.Socket.connect(Socket.java:478) at java.net.Socket.<init>(Socket.java:375) at java.net.Socket.<init>(Socket.java:218) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:294) ... 32 more 12/10/12 10:42:23 ERROR manager.CatalogQueryManager: Failed to list columns com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2369) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2153) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:207) at com.cloudera.sqoop.manager.SqlManager.makeConnection(SqlManager.java:684) at com.cloudera.sqoop.manager.GenericJdbcManager.getConnection(GenericJdbcManager.java:53) at com.cloudera.sqoop.manager.CatalogQueryManager.getColumnNames(CatalogQueryManager.java:147) at com.cloudera.sqoop.orm.ClassWriter.getColumnNames(ClassWriter.java:1198) at com.cloudera.sqoop.orm.ClassWriter.generate(ClassWriter.java:1053) at com.cloudera.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:84) at com.cloudera.sqoop.tool.ImportTool.importTable(ImportTool.java:370) at com.cloudera.sqoop.tool.ImportTool.run(ImportTool.java:456) at com.cloudera.sqoop.Sqoop.run(Sqoop.java:146) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at com.cloudera.sqoop.Sqoop.runSqoop(Sqoop.java:182) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:221) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:230) at com.cloudera.sqoop.Sqoop.main(Sqoop.java:239) Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:529) at java.net.Socket.connect(Socket.java:478) at java.net.Socket.<init>(Socket.java:375) at java.net.Socket.<init>(Socket.java:218) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:294) ... 28 more 12/10/12 10:42:23 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. java.lang.RuntimeException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at com.cloudera.sqoop.manager.CatalogQueryManager.getColumnNames(CatalogQueryManager.java:163) at com.cloudera.sqoop.orm.ClassWriter.getColumnNames(ClassWriter.java:1198) at com.cloudera.sqoop.orm.ClassWriter.generate(ClassWriter.java:1053) at com.cloudera.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:84) at com.cloudera.sqoop.tool.ImportTool.importTable(ImportTool.java:370) at com.cloudera.sqoop.tool.ImportTool.run(ImportTool.java:456) at com.cloudera.sqoop.Sqoop.run(Sqoop.java:146) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at com.cloudera.sqoop.Sqoop.runSqoop(Sqoop.java:182) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:221) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:230) at com.cloudera.sqoop.Sqoop.main(Sqoop.java:239) Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:344) at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2332) at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2369) at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2153) at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:792) at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:381) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:207) at com.cloudera.sqoop.manager.SqlManager.makeConnection(SqlManager.java:684) at com.cloudera.sqoop.manager.GenericJdbcManager.getConnection(GenericJdbcManager.java:53) at com.cloudera.sqoop.manager.CatalogQueryManager.getColumnNames(CatalogQueryManager.java:147) ... 11 more Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:529) at java.net.Socket.connect(Socket.java:478) at java.net.Socket.<init>(Socket.java:375) at java.net.Socket.<init>(Socket.java:218) at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257) at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:294) </code></pre>

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