Sqoop：Error during export:Export job failed !
sqoop导出数据到mysql出现异常，平时都很正常的今天不行了，还没什么报错信息，是不是很郁闷。博客上的文章也不太行。。。自己想想原来是这个问题
21/08/25 15:03:05 ERROR tool.ExportTool: Error during export:
Export job failed!
at org.apache.sqoop.mapreduce.ExportJobBase.runExport(ExportJobBase.java:439)
at org.apache.sqoop.manager.SqlManager.exportTable(SqlManager.java:931)
at org.apache.sqoop.tool.ExportTool.exportTable(ExportTool.java:80)
at org.apache.sqoop.tool.ExportTool.run(ExportTool.java:99)
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)
几种可能性
1、转换：空值问题需要转换
–input-fields-terminated-by ‘\001’
–input-null-string ‘\N’
–input-null-non-string ‘\N’
2、表结构不一致，hive表的字段mysql表一定要有，mysql字段可以多不能少
3、mysql表字段长度给少了，给少了，给少了（坑了我半天，，shit），改下结构就好了
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