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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-18169) Coprocessor fix and cleanup before 2.0.0 release
Date Thu, 07 Dec 2017 20:54:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-18169.
---------------------------
      Resolution: Fixed
    Release Note: 
Refactor of Coprocessor API for hbase2. Purged methods that exposed too much of our internals.
Other hooks were recast so they no longer took or returned internal classes; instead we pass
Interfaces or read-only versions of implementations.

Here is some overview doc on changes in hbase2 for Coprocessors including detail on why the
change was made:
https://docs.google.com/document/d/10cabwp_aR3OmpHVoeh544YLC3KwqMD9KiTIrHZAmfec/edit#heading=h.7swwa1jl6wiw

Resolving as done, done for hbase2 at least. I filled in a Release Note that tries to capture
the philosophy applied making this refactor.

> Coprocessor fix and cleanup before 2.0.0 release
> ------------------------------------------------
>
>                 Key: HBASE-18169
>                 URL: https://issues.apache.org/jira/browse/HBASE-18169
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>    Affects Versions: 2.0.0-alpha-1
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Blocker
>             Fix For: 2.0.0-beta-1
>
>
> As discussed in HBASE-18038. In RegionServerServices, Region and StoreFile interfaces
we expose too many unnecessary methods. We need to find a way to not expose these methods
to CP.



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