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Posted to issues@hbase.apache.org by "mingjian (JIRA)" <ji...@apache.org> on 2011/06/09 14:30:59 UTC

[jira] [Updated] (HBASE-3963) Schedule all log-spliiting at startup all at once

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

mingjian updated HBASE-3963:
----------------------------

    Attachment: schedule-all-splitlog.patch

modified the function "splitLog(final String serverName)" to "splitLog(final List<String> serverName)".

> 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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