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https://issues.apache.org/jira/browse/HIVE-24213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marta Kuczora updated HIVE-24213:
---------------------------------
Fix Version/s: 4.0.0
Resolution: Fixed
Status: Resolved (was: Patch Available)
Pushed to master.
Thanks a lot [~zmatyus] for the patch and [~kgyrtkirk] for the review!
> Incorrect exception in the Merge MapJoinTask into its child MapRedTask
> optimizer
> --------------------------------------------------------------------------------
>
> Key: HIVE-24213
> URL: https://issues.apache.org/jira/browse/HIVE-24213
> Project: Hive
> Issue Type: Bug
> Components: Physical Optimizer
> Affects Versions: 4.0.0
> Reporter: Zoltan Matyus
> Assignee: Zoltan Matyus
> Priority: Minor
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The {{CommonJoinTaskDispatcher#mergeMapJoinTaskIntoItsChildMapRedTask}}
> method throws a {{SemanticException}} if the number of {{FileSinkOperator}}s
> it finds is not exactly 1. The exception is valid if zero operators are
> found, but there can be valid use cases where multiple FileSinkOperators
> exist.
> Example: the MapJoin and it child are used in a common table expression,
> which is used for multiple inserts.
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