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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3767) Cache the number of RS in HTable
Date Wed, 13 Apr 2011 00:07:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019125#comment-13019125
] 

Jean-Daniel Cryans commented on HBASE-3767:
-------------------------------------------

@Ted, I guess the improvement provided by setting the core pool size is minimal... I think
I wouldn't even bother going all the way to using the number of CPUs and just start with 1.
Cleaner code.

> 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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