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https://issues.apache.org/jira/browse/HDFS-7491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14329995#comment-14329995
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Hadoop QA commented on HDFS-7491:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12700003/HDFS-7491-branch-2.patch
against trunk revision 6f01330.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9634//console
This message is automatically generated.
> 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-7491-2.patch, HDFS-7491-3.patch,
> HDFS-7491-branch-2.patch, 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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