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From "Karthik Ranganathan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3156) Special case distributed log splitting on fresh cluster startup
Date Tue, 26 Oct 2010 21:33:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925150#action_12925150

Karthik Ranganathan commented on HBASE-3156:

Awesome! I was thinking of doing this without MR if possible - since each RS would replay
the all HLogs in a directory, there is no need to split files and then replay the logs...

> Special case distributed log splitting on fresh cluster startup
> ---------------------------------------------------------------
>                 Key: HBASE-3156
>                 URL: https://issues.apache.org/jira/browse/HBASE-3156
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Karthik Ranganathan
>            Assignee: Karthik Ranganathan
> If the entire HBase goes down (not a graceful stop - example namenode dies) then on a
subsequent restart, the HMaster can hand off the hlog splitting to the respective region servers.
This would parallelize the log splitting and maintain region server hfile locality.

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