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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2011/06/14 00:13:47 UTC
[jira] [Resolved] (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 ]
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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