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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6833) IPC leaks call parameters when exceptions thrown
Date Mon, 18 Jul 2011 20:37:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067278#comment-13067278
] 

Luke Lu commented on HADOOP-6833:
---------------------------------

Thanks for the +1 for branch-0.20-security, Owen, I'll cherry-pick the change and run some
test.

> IPC leaks call parameters when exceptions thrown
> ------------------------------------------------
>
>                 Key: HADOOP-6833
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6833
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.20.2, 0.21.0, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>             Fix For: 0.20.3, 0.20.205.0, 0.21.1, 0.22.0
>
>         Attachments: hadoop-6833-20.patch, hadoop-6833.txt, hadoop-6833.txt
>
>
> HADOOP-6498 moved the calls.remove() call lower into the SUCCESS clause of receiveResponse(),
but didn't put a similar calls.remove into the ERROR clause. So, any RPC call that throws
an exception ends up orphaning the Call object in the connection's "calls" hashtable. This
prevents cleanup of the connection and is a memory leak for the call parameters.

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