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https://issues.apache.org/jira/browse/HIVE-16820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111648#comment-16111648
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Mithun Radhakrishnan commented on HIVE-16820:
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bq. MergeFileTask doesn't appear to implement shutdown at all.
:] Ah, but doesn't it need one? It is conceivable that a user might cancel a
query between the TezTask and the MergeFileTask, (or simply interrupt an
{{ALTER TABLE CONCATENATE}}). In that case, the merge will run through to the
end, in spite of cancellation.
I wonder if there isn't value in applying the HIVE-12556 + HIVE-16820 treatment
for MergeFileTask as well.
> TezTask may not shut down correctly before submit
> -------------------------------------------------
>
> Key: HIVE-16820
> URL: https://issues.apache.org/jira/browse/HIVE-16820
> Project: Hive
> Issue Type: Bug
> Reporter: Visakh Nair
> Assignee: Sergey Shelukhin
> Fix For: 3.0.0
>
> Attachments: HIVE-16820.01.patch, HIVE-16820.patch
>
>
> The query will run and only fail at the very end when the driver checks its
> own shutdown flag.
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