You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2011/06/01 05:01:48 UTC
[jira] [Commented] (HBASE-3679) Provide cost information associated
with moving region(s)
[ https://issues.apache.org/jira/browse/HBASE-3679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041954#comment-13041954 ]
Ted Yu commented on HBASE-3679:
-------------------------------
>From Anty Rao:
When doing balance, Can we take into account the compaction status of regions.
Currently, even the region is doing compaction, it can also be interrupted
to response to reassign.
> Provide cost information associated with moving region(s)
> ---------------------------------------------------------
>
> Key: HBASE-3679
> URL: https://issues.apache.org/jira/browse/HBASE-3679
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
>
> In order for load balancer to make better decision, we need to establish cost model for moving region(s).
> One factor would be the number of active scanners on a particular region.
> This count is easy to maintain at HRegion level. instantiateInternalScanner() can increment the counter and RegionScanner.close() would decrement the count.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira