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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-2087) The wait on compaction because "Too many store files" holds up all flushing
Date Fri, 02 Apr 2010 00:57:27 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans resolved HBASE-2087.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.21.0
         Assignee: Jean-Daniel Cryans
     Hadoop Flags: [Reviewed]

Committed to branch and trunk with a 1000ms sleep, thanks for the review Stack!

> The wait on compaction because "Too many store files" holds up all flushing
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-2087
>                 URL: https://issues.apache.org/jira/browse/HBASE-2087
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.20.4, 0.21.0
>
>         Attachments: HBASE-2087.patch
>
>
> The method MemStoreFlusher#checkStoreFileCount is called from flushRegion.  flushRegion
is called by MemStoreFlusher#run thread.  If the checkStoreFileCount finds too many store
files, it'll stick around waiting on a compaction to happen.  While its hanging, the MemStoreFlusher#run
is held up.  No other region can flush.  Meantime WALs will be rolling and memory will be
accumulating writes.

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