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https://issues.apache.org/jira/browse/HBASE-26981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17558371#comment-17558371
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zhengsicheng commented on HBASE-26981:
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[~zhangduo] I did an extreme test, the client concurrently fetches a
non-existing table with 90 threads, the CPU usage of hbase-1.1.6 is about 25%,
and the usage of hbase-2.3.4 is more than 90%. Why do you do this test because
the online business may have taken the table offline but the task of operating
hbase has not stopped. But in this scenario, the CPU of hbase-1.1.6 is within
the normal range, but the CPU usage of hbase-2.3.4 is too high.
> The CPU usage of the regionserver node where the meta table is located is too
> high
> ----------------------------------------------------------------------------------
>
> Key: HBASE-26981
> URL: https://issues.apache.org/jira/browse/HBASE-26981
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 2.3.4
> Reporter: zhengsicheng
> Priority: Major
> Attachments: 20220624-144119.html, image-2022-04-27-20-24-33-252.png,
> image-2022-04-27-20-45-09-227.png, image-2022-04-28-09-59-40-567.png,
> image-2022-06-24-14-48-26-451.png, image-2022-06-24-14-57-10-424.png, jstack,
> rs_jstack_202206241458.log
>
>
> When the read and write pressure is high, the CPU usage of the meta table
> node is too high
> !image-2022-04-28-09-59-40-567.png!
>
> !image-2022-04-27-20-24-33-252.png!
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