[jira] [Commented] (HBASE-15468) why Hbase only split regions in one RegionServer

["Jonathan Hsieh (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15196497#comment-15196497 ] 

Jonathan Hsieh commented on HBASE-15468:
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Hi, Jack.  This is generally a question for the mailing list -- user@hbase.apache.org.  You basically need to trigger the hbase balancer.  It runs periodically but can also be triggered by going into the hbase shell and running the 'balancer' command.

> why Hbase only split regions in one RegionServer
> ------------------------------------------------
>
>                 Key: HBASE-15468
>                 URL: https://issues.apache.org/jira/browse/HBASE-15468
>             Project: HBase
>          Issue Type: Brainstorming
>          Components: Balancer
>    Affects Versions: 1.0.2
>            Reporter: Jack Wang
>            Priority: Minor
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> I was writing 300GiB data to my Hbase table user_info, the table I created by default having only one region. When the writing was going I saw one region became two regions and more late on it became 8 regions. But my confusion is that the 8 regions were kept in the same RegionServer. Why Hbase didn't split the regions to different RegionServer. btw, I had 10 physical RegionsServers in my Hbase cluster, and the region size I set is 20GiB, Thanks!



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