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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8465) Auto-drop rollback snapshot for snapshot restore
Date Tue, 30 Apr 2013 15:38:16 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-8465:
--------------------------

    Attachment: 8465-trunk-v2.txt

Patch v2 renames rollbackSnapshot as outlined in JIRA description.
                
> Auto-drop rollback snapshot for snapshot restore
> ------------------------------------------------
>
>                 Key: HBASE-8465
>                 URL: https://issues.apache.org/jira/browse/HBASE-8465
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 8465-trunk-v1.txt, 8465-trunk-v2.txt
>
>
> Below is an excerpt from snapshot restore javadoc:
> {code}
>    * Restore the specified snapshot on the original table. (The table must be disabled)
>    * Before restoring the table, a new snapshot with the current table state is created.
>    * In case of failure, the table will be rolled back to the its original state.
> {code}
> We can improve the handling of rollbackSnapshot in two ways:
> 1. give better name to the rollbackSnapshot (adding {code}'-for-rollback-'{code}). Currently
the name is of the form:
>     String rollbackSnapshot = snapshotName + "-" + EnvironmentEdgeManager.currentTimeMillis();
> 2. drop rollbackSnapshot at the end of restoreSnapshot() if the restore is successful.
We can introduce new config param, named 'hbase.snapshot.restore.drop.rollback', to keep compatibility
with current behavior.

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