java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@44f16719 is still active.

sqoop 导入mysql 表时,出现以下异常:

19/07/28 07:44:44 ERROR manager.SqlManager: Error reading from database: java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@1ea9f6af 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@1ea9f6af 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:930)
   at com.mysql.jdbc.MysqlIO.checkForOutstandingStreamingData(MysqlIO.java:2622)
   at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1846)
   at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
   at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536)
   at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2465)
   at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1383)
   at com.mysql.jdbc.ConnectionImpl.getMaxBytesPerChar(ConnectionImpl.java:2931)
   at com.mysql.jdbc.Field.getMaxBytesPerCharacter(Field.java:582)
   at com.mysql.jdbc.ResultSetMetaData.getPrecision(ResultSetMetaData.java:441)
   at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:305)
   at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:260)
   at org.apache.sqoop.manager.SqlManager.getColumnTypes(SqlManager.java:246)
   at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:327)
   at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1872)
   at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1671)
   at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:106)
   at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:501)
   at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:628)
   at org.apache.sqoop.Sqoop.run(Sqoop.java:147)
   at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
   at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:183)
   at org.apache.sqoop.Sqoop.runTool(Sqoop.java:234)
   at org.apache.sqoop.Sqoop.runTool(Sqoop.java:243)
   at org.apache.sqoop.Sqoop.main(Sqoop.java:252)
19/07/28 07:44:44 ERROR tool.ImportTool: Import failed: java.io.IOException: No columns to generate for ClassWriter
   at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1677)
   at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:106)
   at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:501)
   at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:628)
   at org.apache.sqoop.Sqoop.run(Sqoop.java:147)
   at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
   at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:183)
   at org.apache.sqoop.Sqoop.runTool(Sqoop.java:234)
   at org.apache.sqoop.Sqoop.runTool(Sqoop.java:243)
   at org.apache.sqoop.Sqoop.main(Sqoop.java:252)

解决方案: 确认是否在sqoop/lib下加入了mysql 驱动, 另外导入命令中用--driver指定驱动名

sqoop import --connect jdbc:mysql://192.168.202.1:3306/workflow --username root --password a --table project --driver com.mysql.jdbc.Driver

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java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@44f16719 is still active.

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