sqoop-导入数据出现java.sql.SQLException: Streaming result set com.mysql.jdbc.

在运行sqoop的时候出现了mysql的bug导致数据不能导入

具体的异常如下所示：

16/01/24 04:00:06 ERROR manager.SqlManager: Error reading from database: java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@44f16719 is still active. No statements may be issued when any streaming result sets are open and in use on a given connection. Ensure that you have called .close() on any active streaming result sets before attempting more queries.
java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@44f16719 is still active. No statements may be issued when any streaming result sets are open and in use on a given connection. Ensure that you have called .close() on any active streaming result sets before attempting more queries.
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:934)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
        at com.mysql.jdbc.MysqlIO.checkForOutstandingStreamingData(MysqlIO.java:2735)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1899)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2151)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2569)
        at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1524)
        at com.mysql.jdbc.ConnectionImpl.getMaxBytesPerChar(ConnectionImpl.java:3003)
        at com.mysql.jdbc.Field.getMaxBytesPerCharacter(Field.java:602)
        at com.mysql.jdbc.ResultSetMetaData.getPrecision(ResultSetMetaData.java:445)
        at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:286)
        at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:241)
        at org.apache.sqoop.manager.SqlManager.getColumnTypesForQuery(SqlManager.java:234)
        at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:304)
        at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1845)
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1645)
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:148)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
     at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:184)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:226)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:235)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:244)
16/01/24 04:00:06 ERROR tool.ImportTool: Encountered IOException running import job: java.io.IOException: No columns to generate for ClassWriter
        at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1651)
        at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:107)
        at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
        at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
        at org.apache.sqoop.Sqoop.run(Sqoop.java:148)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:184)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:226)
        at org.apache.sqoop.Sqoop.runTool(Sqoop.java:235)
        at org.apache.sqoop.Sqoop.main(Sqoop.java:244)

网上搜索到好多都是因为mysql的bug产生的 ，说是下载一个jar就可以，但是作为一个新手的我不知道该怎么放置，所以就各种找，最后终于解决了这个问题。

解决关键：我用的是mysql-connector-java-5.1.7-bin.jar，更新成mysql-connector-java-5.1.32-bin.jar

解决细节：rpm -ql mysql-connector-java-5.1.17-bin.jar  查看是否有这个包（得到路径然后进去查看），然后使用命令行下载得到

http://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.32.tar.gz之后对.tar.gz进行解压，得到jar包，将包放入sqoop的lib目录下如/opt/cloudera/parcels/CDH-5.8.4-1.cdh5.8.4.p0.5/lib/sqoop/lib/，再次运行，就能够成功运行！

摘自：http://blog.csdn.net/l_lushuang/article/details/50586695