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https://issues.apache.org/jira/browse/HBASE-7042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488753#comment-13488753
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Andrew Purtell commented on HBASE-7042:
---------------------------------------
It is possible to reuse Exec and ExecResult. Just ignore / don't set the row
fields etc. Having separate classes for master exec only is not a clean API in
my opinion.
The issue I see with supporting only system coprocessors is it requires
deployment by way of XML config update as the sole option, which requires a
process restart. Table CPs can be deployed to HDFS and then loaded dynamically
with a schema update without needing to stop any process. Not supporting this
latter option on the master seems a shortcut and limiting.
> Master Coprocessor Endpoint
> ---------------------------
>
> Key: HBASE-7042
> URL: https://issues.apache.org/jira/browse/HBASE-7042
> Project: HBase
> Issue Type: Sub-task
> Reporter: Francis Liu
> Assignee: Francis Liu
> Fix For: 0.96.0
>
> Attachments: HBASE-7042_94.patch
>
>
> Having support for a master coprocessor endpoint would enable developers to
> easily extended HMaster functionality/features. As is the case for region
> server grouping.
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