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From "Eric Newton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-621) master fails to shutdown
Date Tue, 05 Jun 2012 19:58:23 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289669#comment-13289669
] 

Eric Newton commented on ACCUMULO-621:
--------------------------------------

There are three loops that migrate the tablets to the offline state.  The root tablet, the
non-root metadata tablets, and all the rest.  Each loop needs to wait for the next to be be
stopped before they can begin offlining their tablets.

                
> master fails to shutdown
> ------------------------
>
>                 Key: ACCUMULO-621
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-621
>             Project: Accumulo
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 1.4.0, 1.3.5
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>            Priority: Minor
>
> The functional test "ShutdownDuringStart" found a rare issue with shutdown.
>  * master starts
>  * assigns root tablet
>  * goal state is switch to CLEAN_STOP
>  * master assigns non-root METADATA tablets
>  * master transitions into UNLOAD_NON_ROOT_METADATA
>  * master sees the METADATA tablets are not loaded
>  * master transitions into UNLOAD_ROOT_TABLET
>  * tablet server loads the METADATA tablets
>  * master unloads the root tablet
>  * tablet server cannot change the state of the METADATA tables

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