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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7491) Add incremental blockreport latency to DN metrics
Date Fri, 12 Dec 2014 23:18:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14244966#comment-14244966
] 

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/12685855/HDFS-7491.patch
  against trunk revision 3681de2.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 1 new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA
                  org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9028//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/9028//artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9028//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
>            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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