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Biju Nair commented on HBASE-10761: ----------------------------------- Currently [SLB|https://github.com/apache/hbase/blob/baf3ae80f5588ee848176adefc9f56818458a387/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.java#L275] has logic to check {{needBalance}} which seems to satisfy this requirement. Can this be closed? > StochasticLoadBalancer still uses SimpleLoadBalancer's needBalance logic > ------------------------------------------------------------------------ > > Key: HBASE-10761 > URL: https://issues.apache.org/jira/browse/HBASE-10761 > Project: HBase > Issue Type: Bug > Components: Balancer > Affects Versions: 0.98.0 > Reporter: Victor Xu > Priority: Major > Attachments: HBASE_10761.patch, HBASE_10761_v2.patch > > > StochasticLoadBalancer has become the default balancer since 0.98.0. But its > balanceCluster method still uses the BaseLoadBalancer.needBalance() which is > originally designed for SimpleLoadBalancer. It's all based on the number of > regions on the regionservers. > This can cause such a problem: when the cluster has some Hot Spot Region, the > balance process may not be triggered because the numbers of regions on the > RegionServers are averaged. -- This message was sent by Atlassian JIRA (v7.6.3#76005)