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Posted to notifications@accumulo.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2015/04/06 04:07:13 UTC
[jira] [Updated] (ACCUMULO-1802) Create a compaction strategy for
aging off data
[ https://issues.apache.org/jira/browse/ACCUMULO-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Elser updated ACCUMULO-1802:
---------------------------------
Fix Version/s: (was: 1.7.0)
1.8.0
> 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: 1.8.0
>
>
> 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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