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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-3963) Schedule all log-spliiting at startup all at once
Date Mon, 13 Jun 2011 22:13:47 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-3963.
--------------------------

       Resolution: Fixed
    Fix Version/s: 0.92.0
     Hadoop Flags: [Reviewed]

Committed to TRUNK.  Thank you for the patch MingJian.

> Schedule all log-spliiting at startup all at once
> -------------------------------------------------
>
>                 Key: HBASE-3963
>                 URL: https://issues.apache.org/jira/browse/HBASE-3963
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Prakash Khemani
>            Assignee: Prakash Khemani
>             Fix For: 0.92.0
>
>         Attachments: schedule-all-splitlog-trunk.patch, schedule-all-splitlog.patch
>
>
> When distributed log splitting is enabled then it is better to call splitLog() for all
region servers simultaneously. A large number of splitlog tasks will get scheduled - one for
each log file. But a splitlog-worker (region server) executes only one task at a time and
there shouldn't be a danger of DFS overload. Scheduling all the tasks at once ensures maximum
parallelism.

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