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https://issues.apache.org/jira/browse/HBASE-17973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser updated HBASE-17973:
-------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Thanks for the review, Sean, and the input, Ashish!
> Create shell command to identify regions with poor locality
> -----------------------------------------------------------
>
> Key: HBASE-17973
> URL: https://issues.apache.org/jira/browse/HBASE-17973
> Project: HBase
> Issue Type: Improvement
> Components: shell
> Reporter: Josh Elser
> Assignee: Josh Elser
> Fix For: 2.0.0
>
> Attachments: HBASE-17973.001.patch, HBASE-17973.002.patch
>
>
> The data locality of regions often plays a large role in the efficiency of
> HBase. Compactions are also expensive to execute, especially on very large
> tables. The balancer can do a good job trying to maintain locality (when
> tuned properly), but it is not perfect.
> This creates a less-than-desirable situation where it's a costly operation to
> take a cluster with spotty poor locality (e.g. a small percentage of
> regionservers with poor locality).
> We already have this information available via the {{ClusterStatus}} proto.
> We can easily write a shell command that can present regions which are
> lacking a certain percentage of locality.
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