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https://issues.apache.org/jira/browse/HBASE-25894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352241#comment-17352241
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Duo Zhang commented on HBASE-25894:
-----------------------------------
No compatibility issues. The only thing is that, this patch is based on several
previous refactoring patch, which are not necessary to land on branch-2.4 and
branch-2.3, such as moving internal classes out.
I think we could open a backport issue to only port the necessary optimization
work to branch-2.4 and branch-2.3.
WDYT?
Thanks.
> Improve the performance for region load and region count related cost
> functions
> -------------------------------------------------------------------------------
>
> Key: HBASE-25894
> URL: https://issues.apache.org/jira/browse/HBASE-25894
> Project: HBase
> Issue Type: Sub-task
> Components: Balancer, Performance
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.5.0
>
>
> For a large cluster, we have a lot of regions, so computing the whole cost
> will be expensive. We should try to remove the unnecessary calculation as
> much as possible.
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