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https://issues.apache.org/jira/browse/HBASE-25643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17304589#comment-17304589
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Zheng Wang commented on HBASE-25643:
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Thanks all for the review. [~stack][~anoop.hbase][~vjasani]
> 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
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.5.0
>
>
> 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
> 0~300s.
> 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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