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From "Jean-Daniel Cryans (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5393) Consider splitting after flushing
Date Mon, 13 Feb 2012 18:59:00 GMT
Consider splitting after flushing
---------------------------------

                 Key: HBASE-5393
                 URL: https://issues.apache.org/jira/browse/HBASE-5393
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 0.90.5
            Reporter: Jean-Daniel Cryans
            Assignee: Jean-Daniel Cryans
             Fix For: 0.94.0


Spawning this from HBASE-2375, I saw that it was much more efficient compaction-wise to check
if we can split right after flushing. Much like the ideas that Jon spelled out in the description
of that jira, the window is smaller because you don't have to compact and then split right
away to only compact again when the daughters open.

Another thing it improves is while we're normally waiting for the compaction to happen, data
that's still coming in will make us go way past the MAX_FILESIZE to a point where for the
first region I was seeing a store size 3-4x bigger before it was able to split.

I targeted this for 0.94, but I'd like to get this into 0.92.1 or .2 too.

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