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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3236) Clone table into an existing table
Date Fri, 17 Oct 2014 08:31:35 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14174855#comment-14174855
] 

Sean Busbey commented on ACCUMULO-3236:
---------------------------------------

I think under the hood, yes this should require going from an offlined table.

For user facing, I think we should (in a different ticket) add a first pass at user tooling
for taking snapshots. creating a snapshot can be done as clone + offline. we can then build
on that to have the user facing part of this feature based around those snapshots.

> Clone table into an existing table
> ----------------------------------
>
>                 Key: ACCUMULO-3236
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3236
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client, tserver
>            Reporter: John Vines
>             Fix For: 1.7.0
>
>
> Currently we have the ability to clone a table, which takes all files belonging to an
existing table and then makes them owned by a second, brand new table. I think there is a
logic extension to this where you can add the files to an already existing table.
> One point of concern is if data is unused in existing files due to major compactions
of the shared files in the source table. This can be mitigated by either chopping the files
(which sorta goes against the idea of cloning) or ensuring that at source table splits exist
in the destination table.



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