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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (BEAM-23) User-facing state and timers for ParDo(DoFn)
Date Thu, 17 Nov 2016 19:13:58 GMT


ASF GitHub Bot commented on BEAM-23:

GitHub user kennknowles opened a pull request:

    [BEAM-23] DirectRunner: rewrite single-output ParDo to multi-output

    Be sure to do all of the following to help us incorporate your contribution
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    This is in service of simplifying the override and expansion for splittable and stateful

You can merge this pull request into a Git repository by running:

    $ git pull direct-ParDoSingleViaMulti

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1378
commit 0b7fcc8ede9d16d02d047f40f669606cbe00fc4e
Author: Kenneth Knowles <>
Date:   2016-11-17T18:14:07Z

    Separate ParDoTest cases and make them more flexible
    A number of excessively rigid name tests preclude runner expansion
    of ParDo. This change makes them into independent unit tests
    for better signal and makes them more accurate to the intent - the
    name should have the relevant information, but may have other

commit efe582f0fbd4d2693867e5d3d3b3db21de16a9fa
Author: Kenneth Knowles <>
Date:   2016-11-17T18:56:36Z

    No longer execute OldDoFnTest with DirectRunner

commit 60cb48479ee5b0b6f50100bf2f6edec3fa7a552f
Author: Kenneth Knowles <>
Date:   2016-11-16T23:43:47Z

    DirectRunner: Expand ParDo.Bound into ParDo.BoundMulti

commit abc19d5a4672aa0f1334b674c91196c77bf07641
Author: Kenneth Knowles <>
Date:   2016-11-17T19:07:32Z

    Do not override type descriptor in WithTimestamps

commit ef700c967e8589b54053bc6b5e4743f50e43ec87
Author: Kenneth Knowles <>
Date:   2016-11-17T19:08:48Z

    Use getNewFn for coder inferences in ParDo


> User-facing state and timers for ParDo(DoFn)
> --------------------------------------------
>                 Key: BEAM-23
>                 URL:
>             Project: Beam
>          Issue Type: New Feature
>          Components: beam-model
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>              Labels: State
> To a key-partitioned ParDo, add the ability for a user's DoFn to, on a per-key-and-window
>  - read and write consistent state
>  - set a timer to request a callback at a particular moment (in any time domain)

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