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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6730) Enable rolling averages in StochasticLoadBalancer
Date Fri, 07 Sep 2012 22:53:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13451105#comment-13451105
] 

Elliott Clark commented on HBASE-6730:
--------------------------------------

bq.If rLoads.size() > numRegionLoadsToRemember+1, we trim some element(s) off the tail
of the list. Is that desirable ?

We're trimming the first one off.  When the list comes in it will have indices 0 - 14.  We
then say keep [1 - 15). (I thought subList is non-inclusive of the second index passed.  I
could be wrong here.) 
                
> Enable rolling averages in  StochasticLoadBalancer
> --------------------------------------------------
>
>                 Key: HBASE-6730
>                 URL: https://issues.apache.org/jira/browse/HBASE-6730
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>             Fix For: 0.96.0
>
>         Attachments: HBASE-6730-1.patch
>
>
> Now that all of the ServerLoad transitions into pb are done.  the load balancer should
get more updates about the current state of the cluster.  This should be used to allow StochasticLoadBalancer
to get rolling averages.

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