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Date: Fri, 16 Mar 2012 05:09:42 +0000 (UTC)
From: "chunhui shen (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-5571) Table will be disabling forever
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    [ https://issues.apache.org/jira/browse/HBASE-5571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230899#comment-13230899 ] 

chunhui shen commented on HBASE-5571:
-------------------------------------

If AssignmentManager#unassign() catchs RemoteException rather than NotServingRegionException, could we remove catching NotServingRegionException?

I'm not sure when catches RemoteException  and when catches NotServingRegionException directly, from our logs I see it catches NotServingRegionException directly. Anyway, for this issue, we could treat samely for the two exceptions. 
                
> Table will be disabling forever
> -------------------------------
>
>                 Key: HBASE-5571
>                 URL: https://issues.apache.org/jira/browse/HBASE-5571
>             Project: HBase
>          Issue Type: Bug
>          Components: master, regionserver
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: BASE-5571v2.patch, HBASE-5571.patch, HBASE-5571v3.patch
>
>
> If we restart master when it is disabling one table, the table will be disabling forever.
> In current logic, Region CLOSE RPC will always returned NotServingRegionException because RS has already closed the region before we restart master. So table will be disabling forever because the region will in RIT all along.
> In another case, when AssignmentManager#rebuildUserRegions(), it will put parent regions to AssignmentManager.regions, so we can't close these parent regions until it is purged by CatalogJanitor if we execute disabling the table.

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