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https://issues.apache.org/jira/browse/HBASE-17515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15837069#comment-15837069
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Ted Yu commented on HBASE-17515:
--------------------------------
{code}
+class BalancerRegionLoad {
{code}
Add annotation for stability. Suggest using Evolving.
{code}
- when(rl.getStores()).thenReturn(i);
+ when(rl.getStorefileSizeMB()).thenReturn(i);
{code}
The above change is not needed, right ?
> Reduce memory footprint of RegionLoads kept by StochasticLoadBalancer
> ---------------------------------------------------------------------
>
> Key: HBASE-17515
> URL: https://issues.apache.org/jira/browse/HBASE-17515
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: Tim Brown
> Attachments: 17515.v1.txt
>
>
> Currently StochasticLoadBalancer uses the following fields of RegionLoad :
> {code}
> return rl.getReadRequestsCount();
> return rl.getWriteRequestsCount();
> return rl.getMemStoreSizeMB();
> return rl.getStorefileSizeMB();
> {code}
> However, RegionLoad refers to ClusterStatusProtos.RegionLoad which has 18
> fields.
> This means we keep hbase.master.balancer.stochastic.numRegionLoadsToRemember
> (default value 15) RegionLoad's in memory but only use a small portion of
> them.
> This JIRA is to consider creating POJO which wraps the above 4 fields so that
> the memory footprint can be lowered.
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