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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7182) JMX metrics aren't accessible when NN is busy
Date Sat, 10 Jan 2015 01:22:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14272202#comment-14272202
] 

Hadoop QA commented on HDFS-7182:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12691404/HDFS-7182-3.patch
  against trunk revision ae91b13.

    {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:green}+1 findbugs{color}.  The patch does not introduce any 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.TestParallelShortCircuitReadUnCached

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9171//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9171//console

This message is automatically generated.

> JMX metrics aren't accessible when NN is busy
> ---------------------------------------------
>
>                 Key: HDFS-7182
>                 URL: https://issues.apache.org/jira/browse/HDFS-7182
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: HDFS-7182-2.patch, HDFS-7182-3.patch, HDFS-7182.patch
>
>
> HDFS-5693 has addressed all NN JMX metrics in hadoop 2.0.5. Since then couple new metrics
have been added. It turns out "RollingUpgradeStatus" requires FSNamesystem read lock.



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