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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19123) Purge 'complete' support from Coprocesor Observers
Date Tue, 21 Nov 2017 06:21:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16260306#comment-16260306
] 

stack commented on HBASE-19123:
-------------------------------

Looks like I pushed this patch to master branch here unintentionally

commit 08544e54a999df16cb0cef7cf45a17da1eeef42d
Author: Michael Stack <stack@apache.org>
Date:   Thu Nov 16 18:46:27 2017 -0800

    HBASE-19123 Purge 'complete' support from Coprocesor Observers

Leaving it in. Pushed to branch-2.



> Purge 'complete' support from Coprocesor Observers
> --------------------------------------------------
>
>                 Key: HBASE-19123
>                 URL: https://issues.apache.org/jira/browse/HBASE-19123
>             Project: HBase
>          Issue Type: Task
>          Components: Coprocessors
>            Reporter: stack
>            Assignee: stack
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-19123.master.001.patch, HBASE-19123.master.002.patch, HBASE-19123.master.003.patch,
HBASE-19123.master.004.patch
>
>
> Up on dev list under '[DISCUSSION] Removing the bypass semantic from the Coprocessor
APIs', we are discussing purge of 'complete'. Unless objection, lets purge for beta-1.
> [~andrew.purtell@gmail.com] says the following up on the dev list:
> It would simplify the theory of operation for coprocessors if we can assume either the
entire chain will complete or one of the coprocessors in the chain will throw an exception
that not only terminates processing of the rest of the chain but also the operation in progress.
> Security coprocessors interrupt processing by throwing an exception, which is meant to
propagate all the way back to the user.
> I think it's more than fair to ask the same question about 'complete' as we did about
'bypass': Does anyone use it? Is it needed?



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