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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11120) Update documentation about major compaction algorithm
Date Mon, 09 Jun 2014 15:32:02 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025292#comment-14025292

Jean-Daniel Cryans commented on HBASE-11120:

bq.  I don't see hbase.hstore.compaction.min.size in code base any more

Yeah I was confused by this too, [~stack], until I found this thread that you started for
this reason a while back: http://osdir.com/ml/general/2013-06/msg41068.html

Basically, {{CompactionConfiguration}} was written with a "configuration prefix" so doing
a grep on that config (or hbase.hstore.compaction.max.size) won't return anything. I think
we should undo the "refactoring" in that class since it obviously breaks a pattern we're used
to, which is to completely spell out the configuration names so we can easily search for them.

> Update documentation about major compaction algorithm
> -----------------------------------------------------
>                 Key: HBASE-11120
>                 URL: https://issues.apache.org/jira/browse/HBASE-11120
>             Project: HBase
>          Issue Type: Bug
>          Components: Compaction, documentation
>    Affects Versions: 0.98.2
>            Reporter: Misty Stanley-Jones
>            Assignee: Misty Stanley-Jones
>         Attachments: HBASE-11120-2.patch, HBASE-11120-3-rebased.patch, HBASE-11120-3.patch,
HBASE-11120-4-rebased.patch, HBASE-11120-4.patch, HBASE-11120.patch
> [14:20:38]  <jdcryans>	 seems that there's http://hbase.apache.org/book.html#compaction
and http://hbase.apache.org/book.html#managed.compactions
> [14:20:56]  <jdcryans>	 the latter doesn't say much, except that you should manage
> [14:21:44]  <jdcryans>	 the former gives a good description of the _old_ selection
> [14:45:25]  <jdcryans>	 this is the new selection algo since C5 / 0.96.0: https://issues.apache.org/jira/browse/HBASE-7842

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