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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (BEAM-341) ReduceFnRunner allows GC time overflow
Date Tue, 14 Jun 2016 23:10:30 GMT


ASF GitHub Bot commented on BEAM-341:

GitHub user kennknowles opened a pull request:

    [BEAM-341] Fix ReduceFnRunner GC time overflow

    Be sure to do all of the following to help us incorporate your contribution
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           Travis-CI on your fork and ensure the whole test matrix passes).
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You can merge this pull request into a Git repository by running:

    $ git pull gc-time

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 #464
commit 26662378aaf7bb08dde12c6d0fa64f2b490a0d4d
Author: Kenneth Knowles <>
Date:   2016-06-14T23:04:10Z

    Add test for ReduceFnRunner GC time overflow


> ReduceFnRunner allows GC time overflow
> --------------------------------------
>                 Key: BEAM-341
>                 URL:
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-core
>            Reporter: Kenneth Knowles
>            Assignee: Kenneth Knowles
> In {{ReduceFnRunner}}, any window ending after the global window has its GC time capped
to the end of the global window. But for windows ending before the global window the allowed
lateness can still be arbitrary, causing overflow.

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