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https://issues.apache.org/jira/browse/HBASE-25116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17225806#comment-17225806
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niuyulin commented on HBASE-25116:
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yes, If the region num is too large , the canary slows the cluster.
> RegionMonitor support RegionTask count normalize
> ------------------------------------------------
>
> Key: HBASE-25116
> URL: https://issues.apache.org/jira/browse/HBASE-25116
> Project: HBase
> Issue Type: Improvement
> Reporter: niuyulin
> Assignee: niuyulin
> Priority: Minor
>
> large count of region task from canary may affect user normal request,
> meanwhile if region task is few, the availability monitoring may shake for
> occasional exception.
> so , if the task count is large , we will randomly trim tasks for each table,
> according to the raito of the table region count in whole tasks region count.
> If the task count is few, we will repeat tasks
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