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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7848) Use ZK-based read/write lock to make flush-type snapshot robust
Date Tue, 19 Mar 2013 23:57:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Enis Soztutar updated HBASE-7848:

    Attachment: hbase-7848_v2.patch

Updated Ted's patch with some review comments: 
 - EnabledTableSnapshotHandler.prepare() first calls super.prepare() 
 - Instead of wrapping around completeSnapshot(), we wrap around process() for catching exceptions,
and releasing the table lock in finally. 
 - reverted the split policy change in TestSnapshotCloneIndependence. If we use the default
policy, it causes a lot of splits due to the small flush size, and once we do the snapshot
and want to do another split, it fails because it cannot find a midkey for the split. 
> Use ZK-based read/write lock to make flush-type snapshot robust
> ---------------------------------------------------------------
>                 Key: HBASE-7848
>                 URL: https://issues.apache.org/jira/browse/HBASE-7848
>             Project: HBase
>          Issue Type: Improvement
>          Components: snapshots
>    Affects Versions: 0.96.0
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 7848-v1.txt, hbase-7848_v2.patch
> Current region split following flush would fail snapshot.
> We can utilize ZK-based read/write lock to make flush-type snapshot robust

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