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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5258) Move coprocessors set out of RegionLoad
Date Tue, 11 Dec 2012 00:45:22 GMT

     [ https://issues.apache.org/jira/browse/HBASE-5258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sergey Shelukhin updated HBASE-5258:
------------------------------------

    Attachment: HBASE-5258-fix-on-top-of-v1.patch

Trunk patch that goes on top of "v1". I noticed during 0.94 port that using ServerLoad during
jamon output is actually unnecessary, so we can still preserve the functionality there.
                
> Move coprocessors set out of RegionLoad
> ---------------------------------------
>
>                 Key: HBASE-5258
>                 URL: https://issues.apache.org/jira/browse/HBASE-5258
>             Project: HBase
>          Issue Type: Task
>            Reporter: Ted Yu
>            Assignee: Sergey Shelukhin
>            Priority: Critical
>         Attachments: HBASE-5258-094.patch, HBASE-5258-fix-on-top-of-v1.patch, HBASE-5258-v0.patch,
HBASE-5258-v1.patch
>
>
> When I worked on HBASE-5256, I revisited the code related to Ser/De of coprocessors set
in RegionLoad.
> I think the rationale for embedding coprocessors set is for maximum flexibility where
each region can load different coprocessors.
> This flexibility is causing extra cost in the region server to Master communication and
increasing the footprint of Master heap.
> Would HServerLoad be a better place for this set ?
> If required, region server should calculate disparity of loaded coprocessors among regions
and send report through HServerLoad

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