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Posted to dev@storm.apache.org by "Rick Kellogg (JIRA)" <ji...@apache.org> on 2015/10/09 02:55:28 UTC

[jira] [Updated] (STORM-244) DRPC timeout can return null instead of throwing an exception

     [ https://issues.apache.org/jira/browse/STORM-244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rick Kellogg updated STORM-244:
-------------------------------
    Component/s: storm-core

> DRPC timeout can return null instead of throwing an exception
> -------------------------------------------------------------
>
>                 Key: STORM-244
>                 URL: https://issues.apache.org/jira/browse/STORM-244
>             Project: Apache Storm
>          Issue Type: Bug
>          Components: storm-core
>            Reporter: Robert Joseph Evans
>            Assignee: Kyle Nusbaum
>             Fix For: 0.9.2-incubating
>
>
> In DPRC there is a race condition when the cleanup method is called between releasing the sem, cleaning up the atoms and the blocked thread fetching the result.  It looks like it is possible on a timeout that the sem will be released but by the time the thread blocked on the sem actually wakes up the result may have been removed, causing a null to be returned instead of an exception being thrown.



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