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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10233) RPC lacks output flow control
Date Tue, 14 Jan 2014 23:49:19 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13871389#comment-13871389
] 

Jason Lowe commented on HADOOP-10233:
-------------------------------------

Dup of HADOOP-8942?

> RPC lacks output flow control
> -----------------------------
>
>                 Key: HADOOP-10233
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10233
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Priority: Critical
>
> The RPC layer has input flow control via the callq, however it lacks any output flow
control.  A handler will try to directly send the response.  If the full response is not sent
then it is queued for the background responder thread.  The RPC layer may end up queuing so
many buffers that it "locks" up in GC.



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