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https://issues.apache.org/jira/browse/HBASE-16490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435288#comment-15435288
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Matteo Bertozzi commented on HBASE-16490:
-----------------------------------------

yeah something along this line seems good. 
passing arguments to the cleaner like this seems already ok as it is to me.

but we don't want a global lock on the snapshot manager. we want a lock on the 
snapshotName since each snapshot can run concurrently and the cleaner knows 
which snapshot wants to remove from .tmp since the folder is .tmp/snapshotName/

> Fix race condition between SnapshotManager and SnapshotCleaner
> --------------------------------------------------------------
>
>                 Key: HBASE-16490
>                 URL: https://issues.apache.org/jira/browse/HBASE-16490
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Heng Chen
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16490.patch
>
>
> As [~mbertozzi] comments on HBASE-16464,  there maybe race condition between 
> SnapshotManager and SnapshotCleaner.  We should use one lock when create 
> snapshot,  and cleanup should acquire the lock before take action.
> One method is pass HMaster as param into Cleaner through 
> {{FileCleanerDelegate.getDeletableFiles}},  suggestions are welcomed.



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