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From "Prakash Khemani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3963) Schedule all log-spliiting at startup all at once
Date Sun, 12 Jun 2011 05:39:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048248#comment-13048248
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Prakash Khemani commented on HBASE-3963:
----------------------------------------

Patch looks good to me. Thanks.



> 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
>         Attachments: 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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