[jira] [Commented] (BEAM-3194) Support annotating that a DoFn requires stable / deterministic input for replay/retry

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-3194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16267817#comment-16267817 ] 

ASF GitHub Bot commented on BEAM-3194:
--------------------------------------

kennknowles commented on issue #4135: [BEAM-3194] Add @RequiresStableInput annotation
URL: https://github.com/apache/beam/pull/4135#issuecomment-347367940
 
 
   Thanks! Squashed in the fixup and re-running tests since there looked like a failure that I can't imagine this PR caused.

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> Support annotating that a DoFn requires stable / deterministic input for replay/retry
> -------------------------------------------------------------------------------------
>
>                 Key: BEAM-3194
>                 URL: https://issues.apache.org/jira/browse/BEAM-3194
>             Project: Beam
>          Issue Type: New Feature
>          Components: beam-model
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>
> See the thread: https://lists.apache.org/thread.html/5fd81ce371aeaf642665348f8e6940e308e04275dd7072f380f9f945@%3Cdev.beam.apache.org%3E
> We need this in order to have truly cross-runner end-to-end exactly once via replay + idempotence.



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