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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7390) Add extra test cases for assignement on the region server and fix the related issues
Date Wed, 19 Dec 2012 23:25:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536570#comment-13536570

stack commented on HBASE-7390:

bq. But on master failover, when we iterate on the znodes, we ignore the one int the SPLIT
state, that may be the reason.

Yes. In case the master went away on us, so the new master gets the SPLIT callback...and its
handler does the SPLIT cleanup. 

Comment doesn't enough:

   * Transitions an existing node for the specified region which is
   * currently in the SPLITTING state to be in the SPLIT state.  Converts the
   * ephemeral SPLITTING znode to an ephemeral SPLIT node.  Master cleans up
   * SPLIT znode when it reads it (or if we crash, zk will clean it up).

> Add extra test cases for assignement on the region server and fix the related issues
> ------------------------------------------------------------------------------------
>                 Key: HBASE-7390
>                 URL: https://issues.apache.org/jira/browse/HBASE-7390
>             Project: HBase
>          Issue Type: Bug
>          Components: Region Assignment, regionserver
>    Affects Versions: 0.96.0
>            Reporter: nkeywal
>            Assignee: nkeywal
>             Fix For: 0.96.0
>         Attachments: 7390.v1.patch, 7390.v2.patch, 7390.v3.patch, 7390.v4.patch, assignment_zk_states.jpg
> We don't have a lot of tests on the region server itself.
> Here are some.
> Some of them are failing, feedback welcome.
> See as well the attached state diagram for the ZK nodes on assignment.

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