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https://issues.apache.org/jira/browse/HBASE-3767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019180#comment-13019180
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stack commented on HBASE-3767:
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bq. If the HTable is already created, currently you still have just 1 thread in
the TPE.
But because we are not caching, the next HTable creation will have a
right-sized TPE.
If we had oversized TPE it'd grow as servers grew.
Aside: Whose idea was the passing of an ExecutorService from HTable down into
HCM for it to use? Thats a little perverse
> Cache the number of RS in HTable
> --------------------------------
>
> Key: HBASE-3767
> URL: https://issues.apache.org/jira/browse/HBASE-3767
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.90.2
> Reporter: Jean-Daniel Cryans
> Fix For: 0.90.3
>
>
> When creating a new HTable we have to query ZK to learn about the number of
> region servers in the cluster. That is done for every single one of them, I
> think instead we should do it once per JVM and then reuse that number for all
> the others.
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