[jira] [Commented] (HBASE-25222) Add a cost function to move the daughter regions of a recent split to different region servers

["David Manning (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-25222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17774707#comment-17774707 ] 

David Manning commented on HBASE-25222:
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Seems like in hbase 2.x, this is already less of an issue, because the SplitTableRegionProcedure will choose new servers to open the daughter regions. In hbase 1.x, the daughter regions would open on the same server as the parent region.

> Add a cost function to move the daughter regions of a recent split to different region servers 
> -----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-25222
>                 URL: https://issues.apache.org/jira/browse/HBASE-25222
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Sandeep Pal
>            Assignee: Sandeep Pal
>            Priority: Major
>
> In HBase, hotspot regions are easily formed whenever there is skew and there is high write volume. Few regions grow really fast which also becomes the bottleneck on the few region servers. 
> It would be beneficial to add a cost function to move the regions after the split to differetn region servers. In this way the writes to hot key range will be distributed to multiple region servers. 



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