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https://issues.apache.org/jira/browse/HIVE-1678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917684#action_12917684
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Namit Jain commented on HIVE-1678:
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Nice catch - Thanks
+1
will commit if the tests pass
> NPE in MapJoin
> ---------------
>
> Key: HIVE-1678
> URL: https://issues.apache.org/jira/browse/HIVE-1678
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Amareshwari Sriramadasu
> Assignee: Amareshwari Sriramadasu
> Attachments: patch-1678.txt
>
>
> The query with two map joins and a group by fails with following NPE:
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.MapJoinOperator.processOp(MapJoinOperator.java:177)
> at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:457)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:697)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.processOp(SelectOperator.java:84)
> at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:457)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:697)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:464)
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