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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3236) Clone table into an existing table
Date Wed, 15 Oct 2014 19:52:34 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172842#comment-14172842
] 

John Vines commented on ACCUMULO-3236:
--------------------------------------

571 struck me as two potential things which I did not intent.
1. It was detailed enough to support subsets. For that reason I see this as a starting point
and 571 extending into that space
2. It comes off as a destructive operation (your union comment made that clear).

This is intended to be something simpler and non-destructive.

> 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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