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https://issues.apache.org/jira/browse/HBASE-8836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13699400#comment-13699400
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Tianying Chang commented on HBASE-8836:
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Attached the write throughput number for original case and after fix case. It
is measured against with and without read traffic so that we can see how the
write throughput is impacted by the heavy read request.
> Separate reader and writer thread pool in RegionServer, so that write
> throughput will not be impacted when the read load is very high
> -------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-8836
> URL: https://issues.apache.org/jira/browse/HBASE-8836
> Project: HBase
> Issue Type: New Feature
> Components: Performance, regionserver
> Affects Versions: 0.94.8
> Reporter: Tianying Chang
> Assignee: Tianying Chang
> Fix For: 0.98.0, 0.95.2, 0.94.10
>
> Attachments: hbase-8836.patch, Hbase-8836-perfNumber.pdf
>
>
> We found that when the read load on a specific RS is high, the write
> throughput also get impacted dramatically, and even cause write data loss
> sometimes. We want to prioritize the write by putting them in a separate
> queue from the read request, so that slower read will not make fast write
> wait nu-necessarily long.
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