[jira] [Commented] (HBASE-9740) A corrupt HFile could cause endless attempts to assign the region without a chance of success

["ramkrishna.s.vasudevan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-9740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13791174#comment-13791174 ] 

ramkrishna.s.vasudevan commented on HBASE-9740:
-----------------------------------------------

@Aditya
HBASE-9522 is a similar issue.  We have a patch for that.  Anyway that patch does not deal with AM states but collects those HFiles seperately just logs a message.  The intention was if one of the HFile is corrupted over a bunch of HFiles associated with that region, atleast the region opening could happen with that. (at the cost of data loss).  This will be a configuration.
I can attach a patch with some rebase.

> A corrupt HFile could cause endless attempts to assign the region without a chance of success
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-9740
>                 URL: https://issues.apache.org/jira/browse/HBASE-9740
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Aditya Kishore
>            Assignee: Aditya Kishore
>
> As described in HBASE-9737, a corrupt HFile in a region could lead to an assignment storm in the cluster since the Master will keep trying to assign the region to each region server one after another and obviously none will succeed.
> The region server, upon detecting such a scenario should mark the region as "RS_ZK_REGION_FAILED_ERROR" (or something to the effect) in the Zookeeper which should indicate the Master to stop assigning the region until the error has been resolved (via an HBase shell command, probably "assign"?)



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