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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1011) automatically merge away small tablets
Date Thu, 31 Jan 2013 01:10:11 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13567204#comment-13567204
] 

Mike Drob commented on ACCUMULO-1011:
-------------------------------------

Sometimes users will want to pre-split a table (e.g. for date partitioned keys), and will
have empty tablets for a while. This improvement will need some notion of when it is not appropriate
to merge without disabling entirely. Specifically, it would be desirable to leave the new
tablets untouched until they are actually populated, but keep old tablets eligible for merge
as data ages off and they shrink over time.
                
> automatically merge away small tablets
> --------------------------------------
>
>                 Key: ACCUMULO-1011
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1011
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: master
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>             Fix For: 1.6.0
>
>
> Establish a small size configuration parameter, and have the master coordinate a merge
if the tablet size falls below this value.

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