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https://issues.apache.org/jira/browse/HBASE-24152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17104609#comment-17104609
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Michael Stack commented on HBASE-24152:
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Sorry [~filtertip], I'm having trouble following whats going on here. I went
looking for doc on ONE_SSD but doesn't seem to be any (grepping about in HDFS
source). I see we set this placement policy per column family. How we make the
jump from per-column family storage policy to balancer which is
regions-to-server is giving me trouble. Pardon my being 'thick'.
> 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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