[jira] [Commented] (YARN-6442) Inaccurate javadoc in NodeManagerHardwareUtils.getContainerMemoryMB

["Siddharth Ahuja (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-6442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16785437#comment-16785437 ] 

Siddharth Ahuja commented on YARN-6442:
---------------------------------------

Hi there, can someone kindly assign this Jira to me please? Thanks in advance!

> Inaccurate javadoc in NodeManagerHardwareUtils.getContainerMemoryMB
> -------------------------------------------------------------------
>
>                 Key: YARN-6442
>                 URL: https://issues.apache.org/jira/browse/YARN-6442
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Miklos Szegedi
>            Priority: Minor
>              Labels: newbie
>
> NodeManagerHardwareUtils.getContainerMemoryMB has the following javadoc:
> {code}
> "If the OS has a
>    * ResourceCalculatorPlugin implemented, the calculation is 0.8 * (RAM - 2 *
>    * JVM-memory) i.e. use 80% of the memory after accounting for memory used by
>    * the DataNode and the NodeManager. If the number is less than 1GB, log a
>    * warning message."
> {code}
> I think the accurate expression is 0.8*(RAM-2*JVM)-systemreserved. I also do not see the 1GB cap in the code.



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