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From "Billy Pearson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2527) Poor distribution of regions
Date Fri, 04 Jan 2008 19:47:35 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12556036#action_12556036
] 

Billy Pearson commented on HADOOP-2527:
---------------------------------------

I see the same thing on starting up a cluster with 4 nodes

1 node gets the Root
1 node gets the META
and 1 node gets the rest of the regions
and the last node gets nothing

I do not have as many regions as you but I thank on start up the master should use a round
ribbon fashion to load the regions to the nodes.



> Poor distribution of regions
> ----------------------------
>
>                 Key: HADOOP-2527
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2527
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: contrib/hbase
>    Affects Versions: 0.15.0
>         Environment: CentOS 5
>            Reporter: Chris Kline
>            Priority: Minor
>
> We get poor distribution of regions when we start up HBase.  We have a total of 13 nodes
and 898 regions, which should yield an average of 69 regions per node.  Instead, one node
has 173 regions and one node has 16 regions.
> Address	Start Code	Load
> 10.100.11.62:60020	1199406218912	requests: 0 regions: 63
> 10.100.11.59:60020	1199406219179	requests: 0 regions: 55
> 10.100.11.60:60020	1199406219062	requests: 0 regions: 90
> 10.100.11.61:60020	1199406219132	requests: 1 regions: 54
> 10.100.11.64:60020	1199406218817	requests: 0 regions: 173
> 10.100.11.31:60020	1199406219039	requests: 1 regions: 16
> 10.100.11.58:60020	1199406218895	requests: 0 regions: 89
> 10.100.11.56:60020	1199406219037	requests: 0 regions: 76
> 10.100.11.65:60020	1199406219135	requests: 0 regions: 56
> 10.100.11.57:60020	1199406219183	requests: 1 regions: 56
> 10.100.11.33:60020	1199406219174	requests: 1 regions: 56
> 10.100.11.32:60020	1199406218944	requests: 0 regions: 66
> 10.100.11.63:60020	1199406219182	requests: 0 regions: 48
> Total: 	servers: 13	 	requests: 4 regions: 898

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