2

I get the following error when I connect to mysql on one cluster (aaaaaa1) and sqooop on a different server (aaaaaa2), despite creating a table in mySql with full permissions granted to the other cluster.

Please help me to determine what is the cause of this issue. Thanks!

**$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)
4

5 に答える 5

2

パラメータ --username および --password を使用して、疑わしい MySQL ユーザー名とパスワードを指定していないようです。資格情報を明示的に設定することをお勧めします。また、MySQL はデフォルトでポート 11000 ではなく 3306 で実行されるため、ポートが正しいことを確認してください。

その後、mysql コマンド ライン ユーティリティを使用して、Sqoop を実行しているのと同じマシンから MySQL ボックスに接続してみてください。

mysql -h (mysql のアドレス) -p 11000 -u (ユーザー名) -p(パスワード) sqoopdemo

MySQL ボックスに接続できない場合に備えて、このコマンドの出力を共有していただければ幸いです。

于 2012-11-14T22:19:25.200 に答える
0

私の問題は、IP アドレスに適切なアクセス許可を与えることで解決されました: のすべての権限を付与します。root@192.168.42.1 に GRANT OPTION を使用して「root」によって識別されます。

異なる IPV4 IP アドレスがあります。正しい IP アドレスを選択していることを確認してください。

于 2014-04-04T05:39:56.857 に答える
0

以下の sqoop コマンドを実行してください

sqoop import --connect jdbc:mysql://(mysql のアドレス):3306/sqoopdemo --table widgets

于 2014-01-28T12:52:18.127 に答える