[jira] Commented: (HADOOP-6279) Add JVM memory usage to JvmMetrics

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758543#action_12758543 ] 

Hadoop QA commented on HADOOP-6279:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12420321/hadoop-6279.txt
  against trunk revision 817823.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/63/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/63/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/63/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/63/console

This message is automatically generated.

> Add JVM memory usage to JvmMetrics
> ----------------------------------
>
>                 Key: HADOOP-6279
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6279
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.20.2, 0.21.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>         Attachments: hadoop-6279.txt
>
>
> The JvmMetrics currently publish memory usage from the MemoryMXBean. This is useful, but doesn't include the total heap size (eg as displayed in the JT Web UI).
> It would be nice to expose Runtime.getRuntime().maxMemory() as part of JvmMetrics.
> It seems that Runtime.getRuntime().totalMemory() (used by the JT for "memory used") is the same as the 'memHeapCommittedM' which already exists.

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