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https://issues.apache.org/jira/browse/HBASE-24152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17103887#comment-17103887
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Michael Stack commented on HBASE-24152:
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Why not just give host3 a more attractive score?
Up the weights for host1 and host2 because they are 'only' hdd.
Starting a new scoring that is exclusively about SSD doesn't seem like the
right direction. Better if when scoring a host for the balancer, there is one
scoring only which has taking into account all factors -- count of regions
already assigned, as well as whether host host has SSD or not.
Is this feature for the case where only some hosts in the cluster have SSD?
Thanks.
> 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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