[
https://issues.apache.org/jira/browse/HBASE-14110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14630299#comment-14630299
]
Ted Yu commented on HBASE-14110:
--------------------------------
Tested the patch on a 6 node cluster where there're two user tables with
REGION_REPLICATION => '3'. One table has 270 regions and the other has 60
regions.
The numbers of primary region replicas across region servers are:
19, 18, 17, 19, 18, 19
Previously the numbers were:
17, 18, 11, 21, 17, 24
> Add CostFunction for balancing primary region replicas
> ------------------------------------------------------
>
> Key: HBASE-14110
> URL: https://issues.apache.org/jira/browse/HBASE-14110
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 14110-v1.txt
>
>
> Currently replicas for the same region are spread across region servers.
> However, one region server may serve disproportionately high number of
> primary region replicas. This has been observed in production cluster.
> This issue adds PrimaryRegionCountSkewCostFunction which facilitates
> balancing primary region replicas evenly across region servers.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
