mokai created HBASE-27607:
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Summary: 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
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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