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From "Michael Han (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2498) Potential resource leak in C client when processing unexpected / out of order response
Date Wed, 03 Aug 2016 19:46:20 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406506#comment-15406506
] 

Michael Han commented on ZOOKEEPER-2498:
----------------------------------------

Thanks [~rgs] for committing the patch!

> Potential resource leak in C client when processing unexpected / out of order response
> --------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2498
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2498
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: c client
>    Affects Versions: 3.4.8, 3.5.2
>            Reporter: Michael Han
>            Assignee: Michael Han
>             Fix For: 3.4.9, 3.5.3
>
>         Attachments: ZOOKEEPER-2498.patch
>
>
> In C client, we use reference counting to decide if a given zh handle can be destroyed
or not. This requires we always make sure to call api_prolog (which increment the counter)
and api_epilog (which decrease the counter) in pairs, for a given call context. 
> In zookeeper_process, there is a place where the code will return without invoking api_epilog,
which would lead to potential zh resource leak.



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