[jira] [Commented] (ZOOKEEPER-1670) zookeeper should set a default value for SERVER_JVMFLAGS so that memory usage is controlled

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

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-1670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603951#comment-13603951 ] 

Hadoop QA commented on ZOOKEEPER-1670:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12573957/ZOOKEEPER-1670.patch
  against trunk revision 1455387.

    +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 (version 1.3.9) 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: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1430//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1430//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-ZOOKEEPER-Build/1430//console

This message is automatically generated.
                
> zookeeper should set a default value for SERVER_JVMFLAGS so that memory usage is controlled
> -------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1670
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1670
>             Project: ZooKeeper
>          Issue Type: Bug
>    Affects Versions: 3.4.5
>            Reporter: Arpit Gupta
>            Assignee: Arpit Gupta
>             Fix For: 3.4.6
>
>         Attachments: ZOOKEEPER-1670.patch
>
>
> We noticed this with jdk 1.6 where if no heap size is set the process takes up to 1/4 of mem available on the machine.
> More info http://stackoverflow.com/questions/3428251/is-there-a-default-xmx-setting-for-java-1-5
> You can run the following command to see what are the defaults for your machine
> {code}
> java -XX:+PrintFlagsFinal -version 2>&1 | grep -i -E 'heapsize|permsize|version'
> {code}
> And we noticed on two different class of machines that this was 1/4th of total memory on the machine.

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