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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13682) Compute HDFS locality in parallel.
Date Mon, 01 Jun 2015 17:49:19 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Elliott Clark updated HBASE-13682:
----------------------------------
    Attachment:     (was: HBASE-13638-v2.patch)

> Compute HDFS locality in parallel.
> ----------------------------------
>
>                 Key: HBASE-13682
>                 URL: https://issues.apache.org/jira/browse/HBASE-13682
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Elliott Clark
>            Assignee: Changgeng Li
>
> Right now when the balancer needs to know about region locality it asks the cache in
serial. When the cache is empty or expired it goes to the NN.
> On larger clusters with lots of blocks this can be really slow. That means that balancer
is un-usable while masters are being restarted.



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