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From "Tsuyoshi Ozawa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11098) [JDK8] Max Non Heap Memory default changed between JDK7 and 8
Date Fri, 02 Oct 2015 14:55:27 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14941224#comment-14941224
] 

Tsuyoshi Ozawa commented on HADOOP-11098:
-----------------------------------------

[~ajisakaa] good point. Zero or LONG_MAX looks fine to me. Let me implement this feature.

> [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
>
> 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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