[
https://issues.apache.org/jira/browse/HBASE-5165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183181#comment-13183181
]
chunhui shen commented on HBASE-5165:
-------------------------------------
I'm not clear why we need to set disabled flag for each region in zk.
It seems no help for the issue.(DeleteTableHandler will delete these nodes, and
ServerShutdownHandler will assign region if nodes not exist)
We only need to synchronize DeleteTableHandler and ServerShutdownHandler, to
ensure deleted region not assigned.
Since regions of disabled table will not be assigned and fixed up in current
strategy, we only need to ensure that no regions in assigning queue before set
table enabled
> Concurrent processing of DeleteTableHandler and ServerShutdownHandler may
> cause deleted region to assign again
> --------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5165
> URL: https://issues.apache.org/jira/browse/HBASE-5165
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.4
> Reporter: chunhui shen
> Attachments: hbase-5165.patch, hbase-5165v2.patch
>
>
> Concurrent processing of DeleteTableHandler and ServerShutdownHandler may
> cause following situation
> 1.Table has already be disabled.
> 2.ServerShutdownHandler is doing MetaReader.getServerUserRegions.
> 3.When step2 is processing or is completed just now, DeleteTableHandler
> starts to delete region(Remove region from META and Delete region from FS)
> 4.DeleteTableHandler set table enabled.
> 4.ServerShutdownHandler is starting to assign region which is alread deleted
> by DeleteTableHandler.
> The result of above operations is producing an invalid record in .META. and
> can't be fixed by hbck
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
