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https://issues.apache.org/jira/browse/HBASE-28538?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Beaudreault updated HBASE-28538:
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    Attachment: async-prof-pid-7-cpu-2.html

> BackupHFileCleaner.loadHFileRefs is very expensive
> --------------------------------------------------
>
>                 Key: HBASE-28538
>                 URL: https://issues.apache.org/jira/browse/HBASE-28538
>             Project: HBase
>          Issue Type: Bug
>          Components: backup&restore
>            Reporter: Bryan Beaudreault
>            Priority: Major
>         Attachments: async-prof-pid-7-cpu-2.html
>
>
> I noticed some odd CPU spikes on the hmasters of one of our clusters. Turns 
> out it had been getting lots of bulkoads (30k) and processing them was 
> expensive. The method scans hbase and then parses the paths. Surprisingly the 
> parsing is more expensive than the reading hbase, with the vast majority of 
> time spent in org/apache/hadoop/fs/Path.<init>.
> We should see if this is possible to be optimized. Attaching profile.



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