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https://issues.apache.org/jira/browse/HADOOP-1149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated HADOOP-1149:
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Attachment: HADOOP-1149.patch
Dhruba, attached patch calls processOverReplicatedBloc() only if numCurReplica
is larger than expected number. Also has couple of minor changes.
Please review it and may you could use this patch in your test case.
Thanks.
> DFS Scalability: high cpu usage in addStoredBlock
> -------------------------------------------------
>
> Key: HADOOP-1149
> URL: https://issues.apache.org/jira/browse/HADOOP-1149
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assigned To: Raghu Angadi
> Attachments: HADOOP-1149.patch
>
>
> I have seen addStoredBlock() consume lots of CPU. One possible cause is that
> it invokes proccessOverReplicatedBlock. The logic to find and purge
> over-replicated blocks can be done much less often.
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