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https://issues.apache.org/jira/browse/HBASE-20791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16524542#comment-16524542
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Reid Chan commented on HBASE-20791:
-----------------------------------
{code:title=HMaster#finishActiveMasterInitialization, this.balancer is
RSGroupBasedLoadBalancer}
// initialize load balancer
this.balancer.setMasterServices(this);
this.balancer.setClusterMetrics(getClusterMetricsWithoutCoprocessor());
this.balancer.initialize();
{code}
internalBalancer(StochasticLoadBalancer) is initialized in method
{{initialize()}}, and in following code
{code:title=RSGroupBasedLoadBalancer#initialize}
internalBalancer.setMasterServices(masterServices);
internalBalancer.setClusterMetrics(clusterStatus);
internalBalancer.setConf(config);
internalBalancer.initialize();
{code}
StochasticLoadBalancer must accept the {{clusterStatus}} which set by
RSGroupBasedLoadBalancer#setClusterMetrics.
I don't think it an issue, nothing should be fixed.
> RSGroupBasedLoadBalancer#setClusterMetrics should pass ClusterMetrics to it’s
> internalBalancer
> ----------------------------------------------------------------------------------------------
>
> Key: HBASE-20791
> URL: https://issues.apache.org/jira/browse/HBASE-20791
> Project: HBase
> Issue Type: Bug
> Components: rsgroup
> Affects Versions: 3.0.0, 2.0.0
> Reporter: chenxu
> Assignee: chenxu
> Priority: Major
> Attachments: HBASE-20791-master-v1.patch
>
>
> RSGroupBasedLoadBalancer#setClusterMetrics should pass ClusterMetrics to it’s
> internalBalancer, Or the StochasticLoadBalancer(internal balancer) will lose
> it's Up-to-date RegionLoads info, and effect the balance.
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