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From "Keith Turner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1011) automatically merge away small tablets
Date Thu, 31 Jan 2013 12:21:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13567578#comment-13567578
] 

Keith Turner commented on ACCUMULO-1011:
----------------------------------------

Each tablet could have a marker indicating if its a candidate for automatic merge.   User
created tablets would be marked ineligible.   When a user created tablet automatically splits,
the low child would be marked eligible (this is the system created tablet) the high child
would left marked ineligible.  

User created tablets would only go away when the user initiates a merge.

With this strategy automatic splits can be automatically merged.  Is this what we want?

Cloning would need to copy these markers.
                
> 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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