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From "Thiruvel Thirumoolan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16169) Make RegionSizeCalculator scalable
Date Tue, 12 Jul 2016 21:31:20 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thiruvel Thirumoolan updated HBASE-16169:
-----------------------------------------
    Attachment: HBASE-16169.master.002.patch

> Make RegionSizeCalculator scalable
> ----------------------------------
>
>                 Key: HBASE-16169
>                 URL: https://issues.apache.org/jira/browse/HBASE-16169
>             Project: HBase
>          Issue Type: Sub-task
>          Components: mapreduce, scaling
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Thiruvel Thirumoolan
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-16169.master.000.patch, HBASE-16169.master.001.patch, HBASE-16169.master.002.patch
>
>
> RegionSizeCalculator is needed for better split generation of MR jobs. This requires
RegionLoad which can be obtained via ClusterStatus, i.e. accessing Master. We don't want master
to be in this path.
> The proposal is to add an API to the RegionServer that gets RegionLoad of all regions
hosted on it or those of a table if specified. RegionSizeCalculator can use the latter.



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