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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2832) Priorities and multi-threading for MemStore flushing
Date Wed, 25 Aug 2010 00:21:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12902194#action_12902194
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Jean-Daniel Cryans commented on HBASE-2832:
-------------------------------------------

Is this currently integrated in the master branch? If not, then either we finish and close
it or punt to 0.92.0 as we have enough patches in flight.

> Priorities and multi-threading for MemStore flushing
> ----------------------------------------------------
>
>                 Key: HBASE-2832
>                 URL: https://issues.apache.org/jira/browse/HBASE-2832
>             Project: HBase
>          Issue Type: New Feature
>          Components: regionserver
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Critical
>             Fix For: 0.90.0
>
>
> Similar to HBASE-1476 and HBASE-2646 which are for compactions, but do this for flushes.
> Flushing when we hit the normal flush size is a low priority flush.  Other types of flushes
(heap pressure, blocking client requests, etc) are high priority.
> Should have a tunable number of concurrent flushes.
> Will use the {{HBaseExecutorService}} and {{HBaseEventHandler}} introduced from master/zk
changes.

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