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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-15071) Cleanup bypass semantic in MasterCoprocessorHost
Date Mon, 30 Oct 2017 00:08:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15071?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-15071.
---------------------------
       Resolution: Implemented
    Fix Version/s: 2.0.0-alpha-4
     Release Note: Remove bypass from all Master operations.

Marking as implemented, by HBASE-18770. The cleanup in this case is that no Master ops are
bypassable.

> Cleanup bypass semantic in MasterCoprocessorHost
> ------------------------------------------------
>
>                 Key: HBASE-15071
>                 URL: https://issues.apache.org/jira/browse/HBASE-15071
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Coprocessors
>    Affects Versions: 2.0.0
>            Reporter: stack
>            Assignee: Heng Chen
>            Priority: Blocker
>             Fix For: 2.0.0-alpha-4
>
>         Attachments: HBASE-15071.patch
>
>
> Lets decide on this one before we release 2.0.0.
> A bunch of methods in MasterCoprocessorHost on the 'pre' step allow returning true which
indicates the method invocation is not to proceed.
> Not all 'pre' steps do this. Just some.
> Seems a little arbitrary.
> How we skip out if we are not proceed with the invocation is also a little arbitrary.
> When a deleteColumn call is supposed to skip out, it returns a -1, a non-procId. If we
are to skip a balance call, we log that CP said skip and then return false to indicate the
balancer did not run (why?). Elsewhere we just exit silently. In createNamespace we used to
exit silently but HBASE-14888 just changed it so we throw a BypassCoprocessorException instead...

> Lets make them all work the same way.
> (This issue comes of chat w/ Matteo)



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