[jira] [Commented] (HBASE-7240) Cleanup old snapshots on start

["Jesse Yates (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-7240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506808#comment-13506808 ] 

Jesse Yates commented on HBASE-7240:
------------------------------------

We could create a background chore that periodically checks this directory against the running snapshots, but its likely a rare occurrence that we fail a snapshot and can't cleanup after it. We probably just need to add a little cleanup mechanism to on startup (could just drop this into the SnapshotManager as it also plays well into a possible future goal of recovering snapshot attempts between master failures).
                
> Cleanup old snapshots on start
> ------------------------------
>
>                 Key: HBASE-7240
>                 URL: https://issues.apache.org/jira/browse/HBASE-7240
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Client, master, regionserver, snapshots, Zookeeper
>    Affects Versions: hbase-6055
>            Reporter: Jesse Yates
>             Fix For: hbase-6055
>
>
> If the master is hard stopped (i.e. kill -9), the snapshot handler or SnapshotManager may not have a chance to cleanup after the snapshot, leaving extraneous files in the working snapshot directory (/hbase/.snapshot/.tmp directory).

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