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From Daniel Haviv <daniel.ha...@veracity-group.com>
Subject Concatenating ORC files
Date Wed, 10 Dec 2014 15:54:16 GMT
Hi,
I'm trying to use the new concatenate command merge small ORC files and
file right away:

 alter table requests partition(day_ts=1418083200, hour_ts=1418151600)
concatenate;

Diagnostic Messages for this Task:
Error: java.lang.IllegalArgumentException: Column has wrong number of index
entries found: 0 expected: 1
        at
org.apache.hadoop.hive.ql.io.orc.WriterImpl$TreeWriter.writeStripe(WriterImpl.java:726)
        at
org.apache.hadoop.hive.ql.io.orc.WriterImpl$StructTreeWriter.writeStripe(WriterImpl.java:1614)
        at
org.apache.hadoop.hive.ql.io.orc.WriterImpl.flushStripe(WriterImpl.java:1996)
        at
org.apache.hadoop.hive.ql.io.orc.WriterImpl.close(WriterImpl.java:2288)
        at
org.apache.hadoop.hive.ql.exec.OrcFileMergeOperator.closeOp(OrcFileMergeOperator.java:215)
        at
org.apache.hadoop.hive.ql.io.merge.MergeFileMapper.close(MergeFileMapper.java:98)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:61)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:450)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)


Is there some property I need to set for ORC to be able to support
concatenation?

Thanks,
Daniel

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