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https://issues.apache.org/jira/browse/HBASE-26981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17556942#comment-17556942
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Huaxiang Sun commented on HBASE-26981:
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Meta scan is cpu heavy operation. We identified this issue in 2020. We
developed meta replica LoadBalance mode to load balance meta scan across
replica regions.
[https://hbase.apache.org/book.html#async.wal.replication.meta?]
> 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: hbase-connectors
> Affects Versions: 2.3.4
> Reporter: zhengsicheng
> Priority: Major
> Attachments: 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, jstack
>
>
> 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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