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From tgroh <>
Subject [GitHub] beam pull request #3081: Cherry-pick #3080 into release-2.0.0
Date Thu, 11 May 2017 16:32:49 GMT
GitHub user tgroh opened a pull request:

    Cherry-pick #3080 into release-2.0.0

    Be sure to do all of the following to help us incorporate your contribution
    quickly and easily:
     - [ ] Make sure the PR title is formatted like:
       `[BEAM-<Jira issue #>] Description of pull request`
     - [ ] Make sure tests pass via `mvn clean verify`.
     - [ ] Replace `<Jira issue #>` in the title with the actual Jira issue
           number, if there is one.
     - [ ] If this contribution is large, please file an Apache
           [Individual Contributor License Agreement](
    [BEAM-2259] Reshuffle exception release
    Elements will be dropped only if the window they are assigned to is
    expired, which can generally be performed arbitrarily.
    Using infinite allowed lateness can cause an IllegalStateException if
    the ReduceFnRunner observes certain combinations of timers and elements,
    and attempts to buffer an element, setting a watermark hold for window
    expiry (which is past the end of time).

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

    $ git pull reshuffle_exception_release

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 #3081


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