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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6025) Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations
Date Tue, 03 Jan 2017 22:46:58 GMT

     [ https://issues.apache.org/jira/browse/YARN-6025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wangda Tan updated YARN-6025:
-----------------------------
    Summary: Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations
 (was: Issues in synchronization in AbstractYarnScheduler & its hierarchy)

> Fix synchronization issues of AbstractYarnScheduler#nodeUpdate and its implementations
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-6025
>                 URL: https://issues.apache.org/jira/browse/YARN-6025
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacity scheduler, scheduler
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>         Attachments: YARN-6025.002.patch, YARN-6025.01.patch
>
>
> YARN-3139 does optimization on the locks by introducing ReentrantReadWriteLock to remove
synchronized locks, but still seems to have some  synchronization locks in AbstractYarnScheduler
and its hierarchy because of nonavailibility of read write locks in Fifo scheduler.



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