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https://issues.apache.org/jira/browse/HADOOP-2746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Duxbury updated HADOOP-2746:
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Description:
The master currently only does region assignments at startup or when there are
splits or dead regionservers. This means that if you join a new regionserver to
the cluster after startup, it does not get assigned a fair share of the
already-served regions as you would expect. It only gets a share of new regions
being served.
The master should periodically check the balance of regions, based on whatever
assignment function, instead of in reaction to the above listed events.
> [hbase] Master should rebalance region assignments periodically
> ---------------------------------------------------------------
>
> Key: HADOOP-2746
> URL: https://issues.apache.org/jira/browse/HADOOP-2746
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/hbase
> Reporter: Bryan Duxbury
> Fix For: 0.17.0
>
>
> The master currently only does region assignments at startup or when there
> are splits or dead regionservers. This means that if you join a new
> regionserver to the cluster after startup, it does not get assigned a fair
> share of the already-served regions as you would expect. It only gets a share
> of new regions being served.
> The master should periodically check the balance of regions, based on
> whatever assignment function, instead of in reaction to the above listed
> events.
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