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https://issues.apache.org/jira/browse/HIVE-10632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15057188#comment-15057188
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Eugene Koifman commented on HIVE-10632:
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The right way to do this is to add a MetaStoreListener to clean up Acid related
metastore tables on dropTable/Partition.
> Make sure TXN_COMPONENTS gets cleaned up if table is dropped before
> compaction.
> -------------------------------------------------------------------------------
>
> Key: HIVE-10632
> URL: https://issues.apache.org/jira/browse/HIVE-10632
> Project: Hive
> Issue Type: Bug
> Components: Metastore, Transactions
> Affects Versions: 1.0.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Priority: Critical
>
> The compaction process will clean up entries in TXNS,
> COMPLETED_TXN_COMPONENTS, TXN_COMPONENTS. If the table/partition is dropped
> before compaction is complete there will be data left in these tables. Need
> to investigate if there are other situations where this may happen and
> address it.
> see HIVE-10595 for additional info
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