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https://issues.apache.org/jira/browse/HBASE-27607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mokai reassigned HBASE-27607:
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Assignee: mokai
> Region with one huge hfile should split
> ---------------------------------------
>
> Key: HBASE-27607
> URL: https://issues.apache.org/jira/browse/HBASE-27607
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.4.14
> Reporter: mokai
> Assignee: mokai
> Priority: Major
>
> I found some regions in our production cluster have one huge hfile and can
> not split automatically anymore, it causes the poor read performance.
> If a region loaded lots of data via bulkload, it will split after compaction
> done. The reference files are cleared by 'CompactedHFilesDischarger'
> asynchronized, so the daughter regions will not split after compaction
> finished. If the daughter regions have no more write operation, they will
> never split although the rewrote hfile exceed the disired max hfile
> size(ConstantSizeRegionSplitPolicy),
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