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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11295) RPC Server Reader thread can't shutdown if RPCCallQueue is full
Date Fri, 25 Sep 2015 22:57:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908821#comment-14908821
] 

Ming Ma commented on HADOOP-11295:
----------------------------------

Good catch [~xiaochen]! Please go ahead to attach your patch in a new jira.

> RPC Server Reader thread can't shutdown if RPCCallQueue is full
> ---------------------------------------------------------------
>
>                 Key: HADOOP-11295
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11295
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>              Labels: 2.6.1-candidate
>             Fix For: 2.6.1, 2.7.0
>
>         Attachments: HADOOP-11295-2.patch, HADOOP-11295-3.patch, HADOOP-11295-4.patch,
HADOOP-11295-5.patch, HADOOP-11295.006.patch, HADOOP-11295.branch-2.6.patch, HADOOP-11295.patch
>
>
> If RPC server is asked to stop when RPCCallQueue is full, {{reader.join()}} will just
wait there. That is because
> 1. The reader thread is blocked on {{callQueue.put(call);}}.
> 2. When RPC server is asked to stop, it will interrupt all handler threads and thus no
threads will drain the callQueue.



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