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我在合并关键属性上有一个主键列。任何帮助大大appricatedSqoop合并问题 - Hortonworks
16/09/16 14:50:06 INFO mapreduce.Job: Task Id : attempt_1474053990963_0023_m_000000_2, Status : FAILED
Error: java.io.IOException: Cannot join values on null key. Did you specify a key column that exists?
at org.apache.sqoop.mapreduce.MergeMapperBase.processRecord(MergeMapperBase.java:79)
at org.apache.sqoop.mapreduce.MergeTextMapper.map(MergeTextMapper.java:58)
at org.apache.sqoop.mapreduce.MergeTextMapper.map(MergeTextMapper.java:34)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
请显示您的sqoop命令 –
@Mahesh您是否找到解决方案?我有同样的问题。我已将主键作为合并列。但我仍然得到这个错误 – halbs
@halbs你正在使用RDBMS? –