用sqoop導入mysql數據出現如下錯誤:java
14/12/03 16:37:58 ERROR manager.SqlManager: Error reading from database: java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@54b0a583 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.mysql
java.sql.SQLException: Streaming result set com.mysql.jdbc.RowDataDynamic@54b0a583 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.sql
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:930)apache
at com.mysql.jdbc.MysqlIO.checkForOutstandingStreamingData(MysqlIO.java:2694)oop
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1868)spa
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2109)orm
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2642)hadoop
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2571)ci
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1464)get
at com.mysql.jdbc.ConnectionImpl.getMaxBytesPerChar(ConnectionImpl.java:3030)
at com.mysql.jdbc.Field.getMaxBytesPerCharacter(Field.java:592)
at com.mysql.jdbc.ResultSetMetaData.getPrecision(ResultSetMetaData.java:444)
at org.apache.sqoop.manager.SqlManager.getColumnInfoForRawQuery(SqlManager.java:285)
at org.apache.sqoop.manager.SqlManager.getColumnTypesForRawQuery(SqlManager.java:240)
at org.apache.sqoop.manager.SqlManager.getColumnTypes(SqlManager.java:226)
at org.apache.sqoop.manager.ConnManager.getColumnTypes(ConnManager.java:295)
at org.apache.sqoop.orm.ClassWriter.getColumnTypes(ClassWriter.java:1773)
at org.apache.sqoop.orm.ClassWriter.generate(ClassWriter.java:1578)
at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:96)
at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:601)
at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
at org.apache.sqoop.Sqoop.main(Sqoop.java:236)
14/12/03 16:37:58 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:1584)
at org.apache.sqoop.tool.CodeGenTool.generateORM(CodeGenTool.java:96)
at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:478)
at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:601)
at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
at org.apache.sqoop.Sqoop.main(Sqoop.java:236)
這個是因爲mysql-connector-java的bug形成的,出錯時我用的是mysql-connector-java-5.1.10-bin.jar,更新成mysql-connector-java-5.1.32-bin.jar就能夠了。mysql-connector-java-5.1.32-bin.jar的下載地址爲http://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.32.tar.gz。下載完後解壓,在解壓的目錄下能夠找到mysql-connector-java-5.1.32-bin.jar。