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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4455) RMAppImpl state machine does not handle event ATTEMPT_KILLED at ACCEPTED
Date Mon, 13 Aug 2012 21:10:38 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Siddharth Seth updated MAPREDUCE-4455:

       Fix Version/s:     (was: trunk)
    Target Version/s: 2.2.0-alpha
              Status: Open  (was: Patch Available)

Mayank, these transitions don't seem to be valid. I got this wrong while talking to you about
this earlier... sorry about that.

The unit test is broken in this case. The InlineDispatcher, which is used for this test and
others, behaves differently from the regular dispatcher. It handles all events inline, as
against handling one event to completion before processing the next one.
For this test - the App should have transitioned to the KILLED state, before the ATTEMPT_KILLED
event came in.
The DrainDispatcher seems like a much better option for unit tests.
> RMAppImpl state machine does not handle event ATTEMPT_KILLED at ACCEPTED
> ------------------------------------------------------------------------
>                 Key: MAPREDUCE-4455
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4455
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, resourcemanager
>            Reporter: Jason Lowe
>            Assignee: Mayank Bansal
>            Priority: Minor
>         Attachments: MAPREDUCE-4455-trunk-v1.patch
> TestRMAppTransitions#testAppSubmittedKilled causes an invalid event exception but the
test doesn't catch the error since the final app state is still killed.  Killed for the wrong
reason, but the final state is the same.

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