[ https://issues.apache.org/jira/browse/HBASE-25894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Duo Zhang updated HBASE-25894: ------------------------------ Release Note: In CostFromRegionLoadFunction, now we will only recompute the cost for a given region server in regionMoved function, instead of computing all the costs every time. Introduced a DoubleArrayCost for better abstraction, and also try to only compute the final cost on demand as the computation is also a bit expensive. > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005)