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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7297) Allow load balancer to accommodate different region server configurations
Date Sat, 08 Dec 2012 04:59:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13527035#comment-13527035

Lars Hofhansl commented on HBASE-7297:

One could imagine a pluggable heuristic function that ways CPU core, heap, disk drives, etc,
and provides a "capacity value".

> Allow load balancer to accommodate different region server configurations
> -------------------------------------------------------------------------
>                 Key: HBASE-7297
>                 URL: https://issues.apache.org/jira/browse/HBASE-7297
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Ted Yu
> Robert Dyer raised the following scenario under the thread of 'Multiple regionservers
on a single node':
> {quote}
> I have a very small cluster where all nodes are identical.  However, I was
> just given a very powerful node to add into this cluster which effectively
> doubles the total CPUs, RAM, and HDDs in the cluster.
> As such, when I run a MR job half the jobs go to this single, new node yet
> most of the data is not local due to HBase balancing the regions.
> {quote}
> Load balancer should take region server config (total heap in the above case) into account
when allocating regions.

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