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https://issues.apache.org/jira/browse/HIVE-29420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18055531#comment-18055531
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Denys Kuzmenko commented on HIVE-29420:
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Merged to master
Thanks for the review, [~kuczoram]!
> Hive ACID: Cleaner mishandles retries of killed compactions
> -----------------------------------------------------------
>
> Key: HIVE-29420
> URL: https://issues.apache.org/jira/browse/HIVE-29420
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 4.2.0
> Reporter: Denys Kuzmenko
> Priority: Major
> Labels: Compaction, pull-request-available
> Fix For: 4.3.0
>
>
> Compaction retries triggered by timeouts under an incorrect configuration
> pose a risk of data loss. If a compaction is re-attempted before the prior
> attempt has completed or been properly aborted, the Cleaner may observe
> multiple base directories with the same writeId and erroneously delete all of
> them.
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