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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6353) Snapshots shell
Date Sat, 07 Jul 2012 11:58:34 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi updated HBASE-6353:
-----------------------------------

    Attachment: HBASE-6353-v0.patch
    
> Snapshots shell
> ---------------
>
>                 Key: HBASE-6353
>                 URL: https://issues.apache.org/jira/browse/HBASE-6353
>             Project: HBase
>          Issue Type: New Feature
>          Components: shell
>            Reporter: Matteo Bertozzi
>         Attachments: HBASE-6353-v0.patch
>
>
> h6. hbase shell with snapshot commands
> * snapshot <snapshot name> <table name>
> ** Take a snapshot of the specified name with the specified name 
> * restore_snapshot <snapshot name>
> ** Restore specified snapshot on the original table
> * mount_snapshot <snapshot name> <table name> [readonly]
> ** Load the snapshot data as specified table (optional readonly flag)
> * list_snapshots [filter]
> ** Show a list of snapshots
> * delete_snapshot <snapshot name>
> ** Remove a specified snapshot
> h6. Restore Table
> Given a "snapshot name" restore override the original table with the snapshot content.
> Before restoring a new snapshot of the table is taken, just to avoid bad situations.
> (If the table is not disabled we can keep serving reads)
> This allows a full and quick rollback to a previous snapshot.
> h6. Mount Table (Aka Clone Table)
> Given a "snapshot name" a new table is created with the content of the specified snapshot.
> This operation allows:
>  * To have an old version of the table in parallel with the current one.
>  ** Look at snapshot side-by-side with the "current" before making the decision whether
to roll back or not
>  * To Restore only "individual items" (only some small range of data was lost from "current")
>  ** MR job that scan the cloned table and update the data in the original one. (Partial
restore of the data)
>  * if the table is not marked as read-only
>  ** To Add/Remove data from this table without affecting the original one or the snapshot.
> h6. Open points
>  * Add snapshot type option on take snapshot command (global, timestamp)?
>  * Keep separate the "restore" from "mount"?

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