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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-223) Change processTree interface to work better with native code
Date Wed, 19 Dec 2012 18:41:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536273#comment-13536273
] 

Radim Kolar commented on YARN-223:
----------------------------------

currently every system (windows and linux) which have resource calculator has process tree.

if hypothetical system has just resource calculator but not resource process tree then it
will miss just some stats currently sent to RM but not used anywhere. Most important function
- watching container resources will be still missing without process tree.
                
> Change processTree interface to work better with native code
> ------------------------------------------------------------
>
>                 Key: YARN-223
>                 URL: https://issues.apache.org/jira/browse/YARN-223
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Radim Kolar
>            Assignee: Radim Kolar
>            Priority: Critical
>         Attachments: pstree-update4.txt, pstree-update6.txt, pstree-update6.txt
>
>
> Problem is that on every update of processTree new object is required. This is undesired
when working with processTree implementation in native code.
> replace ProcessTree.getProcessTree() with updateProcessTree(). No new object allocation
is needed and it simplify application code a bit.

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