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https://issues.apache.org/jira/browse/HIVE-22568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020170#comment-17020170
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Denys Kuzmenko commented on HIVE-22568:
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[~pvary], [~lpinter] thank you for review and commit!
> Process compaction candidates in parallel by the Initiator
> ----------------------------------------------------------
>
> Key: HIVE-22568
> URL: https://issues.apache.org/jira/browse/HIVE-22568
> Project: Hive
> Issue Type: Improvement
> Reporter: Denys Kuzmenko
> Assignee: Denys Kuzmenko
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-22568.1.patch, HIVE-22568.10.patch,
> HIVE-22568.11.patch, HIVE-22568.12.patch, HIVE-22568.2.patch,
> HIVE-22568.3.patch, HIVE-22568.4.patch, HIVE-22568.5.patch,
> HIVE-22568.6.patch, HIVE-22568.7.patch, HIVE-22568.8.patch, HIVE-22568.9.patch
>
>
> `checkForCompaction` includes many file metadata checks and may be expensive.
> Therefore, make sense using a thread pool here and running
> `checkForCompactions` in parallel.
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