Zheng Wang created HBASE-25643:
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Summary: The delayed FlushRegionEntry should be removed when we
need a non-delayed one
Key: HBASE-25643
URL: https://issues.apache.org/jira/browse/HBASE-25643
Project: HBase
Issue Type: Improvement
Components: regionserver
Reporter: Zheng Wang
Assignee: Zheng Wang
Attachments: image-2021-03-07-15-34-26-597.png
The regionserver periodically check all the regions, if one not flushed for
long time, then it will create a delayed FlushRegionEntry, the delay range is
0~300.
During the delay time, if many data are written to the region suddenly, we can
not do the flush immediately due to the existing one in regionsInQueue, then
the RegionTooBusyException will occur.
It is better to improve the logic here, that the delayed entry should be
replaced by the non-delayed one.
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