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https://issues.apache.org/jira/browse/HBASE-22342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16908831#comment-16908831
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Shardul Singh commented on HBASE-22342:
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Hi, [~jatsakthi] Will submit a patch this weekend for this isssue :)

> space quota usage is calculated almost double then actual usage in case of 
> Split /Merge of region
> -------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-22342
>                 URL: https://issues.apache.org/jira/browse/HBASE-22342
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Ajeet Rai
>            Assignee: Shardul Singh
>            Priority: Minor
>              Labels: quota, space
>
> space quota usage is calculated double for some time because it is 
> considering the usage of the parent region report received earlier. This is 
> normal behaviour because *hbase.master.quotas.region.report.retention.millis* 
> is set as 10 minutes.It's not calculating the usage from the store files, 
> it's taking the usage from the earlier report send to the master by the 
> parent region server till 10 minutes.
> So after 10 minutes, it stops considering the earlier region report and quota 
> is not violated



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