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https://issues.apache.org/jira/browse/HDFS-7491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HDFS-7491:
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Component/s: datanode
Target Version/s: 2.7.0
Hi Ming. This patch looks good.
The test is getting the value of the counter, but it isn't using that value for
anything. Did you mean to put an assert around that value?
Thanks!
> Add incremental blockreport latency to DN metrics
> -------------------------------------------------
>
> Key: HDFS-7491
> URL: https://issues.apache.org/jira/browse/HDFS-7491
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Ming Ma
> Assignee: Ming Ma
> Priority: Minor
> Attachments: HDFS-7491.patch
>
>
> In a busy cluster, IBR processing could be delayed due to NN FSNamesystem
> lock and cause NN to throw NotReplicatedYetException to DFSClient and thus
> increase the overall application latency.
> This will be taken care of when we address the NN FSNamesystem lock
> contention issue.
> It is useful if we can provide IBR latency metrics from DN's point of view.
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