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Posted to common-issues@hadoop.apache.org by "Andrew Kyle Purtell (Jira)" <ji...@apache.org> on 2022/06/15 23:55:00 UTC
[jira] [Closed] (HADOOP-11098) [JDK8] Max Non Heap Memory default changed between JDK7 and 8
[ https://issues.apache.org/jira/browse/HADOOP-11098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Kyle Purtell closed HADOOP-11098.
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> [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
> Priority: Major
> Fix For: 2.8.0, 3.0.0-alpha1
>
> 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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