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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5825) ProportionalPreemptionalPolicy could use readLock over LeafQueue instead of synchronized block
Date Thu, 12 Jan 2017 03:28:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-5825?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15820042#comment-15820042
] 

Sunil G commented on YARN-5825:
-------------------------------

I do not see this as an incompatible change. [~jianhe], could you please confirm.

> ProportionalPreemptionalPolicy could use readLock over LeafQueue instead of synchronized
block
> ----------------------------------------------------------------------------------------------
>
>                 Key: YARN-5825
>                 URL: https://issues.apache.org/jira/browse/YARN-5825
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>            Reporter: Sunil G
>            Assignee: Sunil G
>             Fix For: 2.9.0, 3.0.0-alpha2
>
>         Attachments: YARN-5825.0001.patch, YARN-5825.0002.patch
>
>
> Currently in PCPP, {{synchronized (curQueue)}} is used in various places. Such instances
could be replaced with a read lock. Thank you [~jianhe] for pointing out the same as comment
[here|https://issues.apache.org/jira/browse/YARN-2009?focusedCommentId=15626578&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15626578]



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