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From "Keith Turner (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ACCUMULO-1802) use case for future configurability of major compactions
Date Wed, 23 Oct 2013 18:29:43 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Keith Turner updated ACCUMULO-1802:
-----------------------------------

    Issue Type: New Feature  (was: Sub-task)
        Parent:     (was: ACCUMULO-1451)

> use case for future configurability of major compactions
> --------------------------------------------------------
>
>                 Key: ACCUMULO-1802
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1802
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: tserver
>            Reporter: Eric Newton
>             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.
> Augment the configurable compaction strategy to support multiple output files, and saving/using
extra metadata in each file.



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