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https://issues.apache.org/jira/browse/HIVE-4342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13643407#comment-13643407
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Mihir Kulkarni commented on HIVE-4342:
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Thanks a lot [~navis] and [~namit] for fixing this issue.
> NPE for query involving UNION ALL with nested JOIN and UNION ALL
> ----------------------------------------------------------------
>
> Key: HIVE-4342
> URL: https://issues.apache.org/jira/browse/HIVE-4342
> Project: Hive
> Issue Type: Bug
> Components: Logging, Metastore, Query Processor
> Affects Versions: 0.9.0
> Environment: Red Hat Linux VM with Hive 0.9 and Hadoop 2.0
> Reporter: Mihir Kulkarni
> Assignee: Navis
> Priority: Critical
> Fix For: 0.11.0
>
> Attachments: HIVE-4342.D10407.1.patch, HiveCommands.txt, Query.txt,
> sourceData1.txt, sourceData2.txt
>
>
> UNION ALL query with JOIN in first part and another UNION ALL in second part
> gives NPE.
> bq. JOIN
> UNION ALL
> bq. UNION ALL
> Attachments:
> 1. HiveCommands.txt : command script to setup schema for query under
> consideration.
> 2. sourceData1.txt and sourceData2.txt : required for above command script.
> 3. Query.txt : Exact query which produces NPE.
> NOTE: you will need to update path to sourceData1.txt and sourceData2.txt in
> the HiveCommands.txt to suit your environment.
> Attached files contain the schema and exact query which fails on Hive 0.9.
> It is worthwhile to note that the same query executes successfully on Hive
> 0.7.
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