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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-969) Won't split under load
Date Wed, 29 Oct 2008 23:08:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643692#action_12643692
] 

stack commented on HBASE-969:
-----------------------------

Just saw the 'no split' happen.   One thing to notice is that with our new batch uploading,
we're overwhelming compaction.  I'm seeing long-running compactions up in the minutes again.
 Maybe our algorithm needs tuning -- if lots of store files, pick up more than the smallest
-- especially if all close in size as is what I'm seeing here (flushes are 128M, 2x64M configured
size).  Need to still figure why no split is happening:

{code}
2008-10-29 23:03:02,663 DEBUG org.apache.hadoop.hbase.regionserver.HStore: Compaction size
of 1118057853/info: 16.4g; Skipped 139 files , size: 12677739481
{code}


> Won't split under load
> ----------------------
>
>                 Key: HBASE-969
>                 URL: https://issues.apache.org/jira/browse/HBASE-969
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Priority: Blocker
>             Fix For: 0.19.0
>
>
> Looks like a new bug where we won't split when under load.  Some recent refactoring seems
to have dropped our split provoker.

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