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From "Li Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2314) ContainerManagementProtocolProxy can create thousands of threads for a large cluster
Date Tue, 22 Jul 2014 22:14:40 GMT

    [ https://issues.apache.org/jira/browse/YARN-2314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14071018#comment-14071018
] 

Li Lu commented on YARN-2314:
-----------------------------

Thanks [~jlowe]! About the corner case, I'm wondering whether a bounded time waiting would
be slightly better than waiting? In that way if a certain timeout is triggered then it means
all RPCs are occupied for a really long time, and the system could report this abnormal situation.


> ContainerManagementProtocolProxy can create thousands of threads for a large cluster
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-2314
>                 URL: https://issues.apache.org/jira/browse/YARN-2314
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 2.1.0-beta
>            Reporter: Jason Lowe
>            Priority: Critical
>         Attachments: nmproxycachefix.prototype.patch
>
>
> ContainerManagementProtocolProxy has a cache of NM proxies, and the size of this cache
is configurable.  However the cache can grow far beyond the configured size when running on
a large cluster and blow AM address/container limits.  More details in the first comment.



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