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https://issues.apache.org/jira/browse/HBASE-24152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17109784#comment-17109784
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Zheng Wang commented on HBASE-24152:
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{quote}Why can't the ssd aspect be factored into the general server weight;
e.g. why a replica that is on ssd can't be considered 'more' local that a
replica on hdd.
{quote}
I think the locality should be the actual ratio, or else the users will be
confused on it.
Anyway, will back if i find a better way.
Thanks a lot.
> Add ServerSsdLocalityCostFunction to StochasticLoadBalancer
> -----------------------------------------------------------
>
> Key: HBASE-24152
> URL: https://issues.apache.org/jira/browse/HBASE-24152
> Project: HBase
> Issue Type: New Feature
> Components: Balancer
> Reporter: Zheng Wang
> Assignee: Zheng Wang
> Priority: Major
>
> When use ONE_SSD storagy policy, or ALL_SSD but has not enough SSD, there
> will be some hdfs blocks on DISK and others on SSD,so it is reasonable to
> consider the locality of ssd for StochasticLoadBalancer.
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