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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (BEAM-2502) Processing time timers for expired windows are not ignored
Date Thu, 22 Jun 2017 20:08:00 GMT


ASF GitHub Bot commented on BEAM-2502:

GitHub user kennknowles opened a pull request:

    [BEAM-2502, BEAM-2504, BEAM-2505] Fix processing time timer handling in ReduceFnRunner

    Be sure to do all of the following to help us incorporate your contribution
    quickly and easily:
     - [x] Make sure the PR title is formatted like:
       `[BEAM-<Jira issue #>] Description of pull request`
     - [x] Make sure tests pass via `mvn clean verify`.
     - [x] Replace `<Jira issue #>` in the title with the actual Jira issue
           number, if there is one.
     - [x] If this contribution is large, please file an Apache
           [Individual Contributor License Agreement](
    A few major correctness issues.
    R: @bjchambers 

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

    $ git pull ReduceFnRunner

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 #3425
commit 5773f4e3926054b463d37dff5109d66150739487
Author: Kenneth Knowles <>
Date:   2017-06-22T18:31:28Z

    Add window matcher for pane info

commit 16863f1ae0fc89a47adece6afc56baf1405cca91
Author: Kenneth Knowles <>
Date:   2017-06-22T18:56:53Z

    Tidy LateDataDroppingDoFnRunner

commit 51328352043a26bb55e754671b357324dbd9a20d
Author: Kenneth Knowles <>
Date:   2017-06-22T19:52:42Z

    ReduceFnTester can advance clocks without firing timers

commit f0f1d13d799372a2b65b18663a505ee6488a01da
Author: Kenneth Knowles <>
Date:   2017-06-22T19:53:15Z

    ReduceFnTester assertion for windows that have data buffered

commit eb3fb2347bc57946a925b62b32780c036efee62f
Author: Kenneth Knowles <>
Date:   2017-06-22T19:56:14Z

    Drop late data in ReduceFnTester

commit 4856f88e99a6e7dac40e6dd34c0b2d27563e7759
Author: Kenneth Knowles <>
Date:   2017-06-22T19:56:34Z

    Do not GC windows based on processing time timer!

commit 470e7f8a18717f09e2c0e8e2b291fb3298333db7
Author: Kenneth Knowles <>
Date:   2017-06-22T20:04:23Z

    Add test reproducing BEAM-2505, ignored

commit 85e583d87a8be4e16eab3dca5fc87d5259b8b0ab
Author: Kenneth Knowles <>
Date:   2017-06-22T20:05:42Z

    Add tests for corner cases of processing time timers


> Processing time timers for expired windows are not ignored
> ----------------------------------------------------------
>                 Key: BEAM-2502
>                 URL:
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-core
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
>            Priority: Critical
>             Fix For: 2.1.0
> If the ReduceFnRunner receives a processing time timer for an expired window, it may
produce output even though the window is expired (and may have already sent a final output!)

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