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From "Zhihong Yu (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-5258) Move coprocessors set out of RegionLoad
Date Thu, 26 Jan 2012 00:59:40 GMT

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

Zhihong Yu updated HBASE-5258:
------------------------------

    Description: 
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

  was:
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 ?

        Summary: Move coprocessors set out of RegionLoad  (was: Move coprocessors set out
of RegionLoad, region server should calculate disparity of loaded coprocessors among regions
and send report through HServerLoad)
    
> Move coprocessors set out of RegionLoad
> ---------------------------------------
>
>                 Key: HBASE-5258
>                 URL: https://issues.apache.org/jira/browse/HBASE-5258
>             Project: HBase
>          Issue Type: Task
>            Reporter: Zhihong Yu
>            Priority: Critical
>
> 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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