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Posted to issues@hbase.apache.org by "Anoop Sam John (Jira)" <ji...@apache.org> on 2021/04/12 02:06:00 UTC
[jira] [Commented] (HBASE-25727) Support Read/Write request size
cost functions in StochasticLoadBalancer
[ https://issues.apache.org/jira/browse/HBASE-25727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318971#comment-17318971 ]
Anoop Sam John commented on HBASE-25727:
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You mean response size for read reqs?
> Support Read/Write request size cost functions in StochasticLoadBalancer
> ------------------------------------------------------------------------
>
> Key: HBASE-25727
> URL: https://issues.apache.org/jira/browse/HBASE-25727
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Affects Versions: 3.0.0-alpha-1, 2.0.0, 1.4.13
> Reporter: Xiaolin Ha
> Priority: Major
>
> Currently, StochasticLoadBalancer has several cost functions to reflect pressure of regions, they are Read/Write/CP RequestCostFunction, MemStoreSizeCostFunction, StoreFileCostFunction. Memstore and storefile cost functions are used to reflect the write io pressure. But when some regions has high read io pressures, balancer can not aware of it and then make some actions.
> Like request count cost functions in StochasticLoadBalancer, we could also support request size cost functions. Because in some circumstances, request size is the most important factor reflecting the pressure of RSes.
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