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Posted to dev@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/11/24 00:12:58 UTC
[jira] [Created] (HIVE-15278) PTF+SortMergeJoin = NPE
Sergey Shelukhin created HIVE-15278:
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Summary: PTF+SortMergeJoin = NPE
Key: HIVE-15278
URL: https://issues.apache.org/jira/browse/HIVE-15278
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
Assignee: Sergey Shelukhin
Manifests as
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Caused by: java.lang.NullPointerException
at org.apache.hadoop.hive.ql.exec.persistence.PTFRowContainer.first(PTFRowContainer.java:115)
at org.apache.hadoop.hive.ql.exec.PTFPartition.iterator(PTFPartition.java:114)
at org.apache.hadoop.hive.ql.exec.PTFOperator$PTFInvocation.finishPartition(PTFOperator.java:340)
at org.apache.hadoop.hive.ql.exec.PTFOperator.process(PTFOperator.java:114)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:838)
at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:343)
... 29 more
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It's actually a somewhat subtle ordering problem in sortmerge - as it stands, it calls different branches of the tree in closeOp after they themselves have already been closed. Other operators that clean stuff up in close may result in different errors. The common pattern is
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1125 at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource$GroupIterator.next(ReduceRecordSource.java:352)
1126 at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.pushRecord(ReduceRecordSource.java:274)
1127 at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.fetchOneRow(CommonMergeJoinOperator.java:404)
...
1131 at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.joinFinalLeftData(CommonMergeJoinOperator.java:428)
1132 at org.apache.hadoop.hive.ql.exec.CommonMergeJoinOperator.closeOp(CommonMergeJoinOperator.java:388)
1133 at org.apache.hadoop.hive.ql.exec.Operator.close(Operator.java:617)
...
1139 at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordProcessor.close(ReduceRecordProcessor.java:294)
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