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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11098) [JDK8] Max Non Heap Memory default changed between JDK7 and 8
Date Sun, 04 Oct 2015 23:24:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942859#comment-14942859
] 

Hudson commented on HADOOP-11098:
---------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8565 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8565/])
HADOOP-11098. [JDK8] Max Non Heap Memory default changed between JDK7 (ozawa: rev 30e2f836a26490a24c7ddea754dd19f95b24bbc8)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/source/JvmMetrics.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.html
* hadoop-common-project/hadoop-common/CHANGES.txt


> [JDK8] Max Non Heap Memory default changed between JDK7 and 8
> -------------------------------------------------------------
>
>                 Key: HADOOP-11098
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11098
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.3.0, 2.7.1
>         Environment: JDK8
>            Reporter: Travis Thompson
>            Assignee: Tsuyoshi Ozawa
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-11098.001.patch, after.png
>
>
> I noticed this because the NameNode UI shows "Max Non Heap Memory" which after some digging
I found correlates to MaxDirectMemorySize.
> JDK7
> {noformat}
> Heap Memory used 16.75 GB of 23 GB Heap Memory. Max Heap Memory is 23.7 GB.
> Non Heap Memory used 57.32 MB of 67.38 MB Commited Non Heap Memory. Max Non Heap Memory
is 130 MB. 
> {noformat}
> JDK8
> {noformat}
> Heap Memory used 3.02 GB of 7.65 GB Heap Memory. Max Heap Memory is 23.7 GB.
> Non Heap Memory used 103.12 MB of 104.41 MB Commited Non Heap Memory. Max Non Heap Memory
is -1 B. 
> {noformat}
> More information in first comment.



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