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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1802) Create a compaction strategy for aging off data
Date Tue, 22 Apr 2014 13:28:15 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976747#comment-13976747
] 

Sean Busbey commented on ACCUMULO-1802:
---------------------------------------

[~afuchs], could you break those into separate tickets?

> Create a compaction strategy for aging off data
> -----------------------------------------------
>
>                 Key: ACCUMULO-1802
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1802
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: tserver
>            Reporter: Eric Newton
>            Priority: Trivial
>             Fix For: 1.7.0
>
>
> The default compaction strategy has a tendency to put the oldest data in the largest
files.  This leads to a lot of work when it is time to age off data.
> One could imaging a compaction strategy that would split data into separate files based
on the timestamp.  Additionally, if the min/max timestamps for a file were known, old data
could be aged off by deleting whole files.
> To accomplish this, will need to augment the configurable compaction strategy to support
multiple output files, and saving/using extra metadata in each file.



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