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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8465) Auto-drop rollback snapshot for snapshot restore
Date Tue, 30 Apr 2013 15:08:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645652#comment-13645652
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Matteo Bertozzi commented on HBASE-8465:
----------------------------------------

patch looks good to me, 
we have already other conf property name hardcoded in the Admin should we start to move them
somewhere like HConfigurationConst or similar?
do you want also to include the rename of the "rollbackSnapshot" or is abandoned as idea?
                
> 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
>
>
> 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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