GitHub user kl0u opened a pull request:
https://github.com/apache/flink/pull/2093
[FLINK-3714] Add Support for "Allowed Lateness"
Allows the user to specify an "allowed lateness" for elements, before they
are dropped as late arrivals.
In addition, it defines a "clean up" time for the window state, which is
the end of the window plus the
aforementioned allowed lateness. When the watermark or the processing time
(depending on the widow
assigner) passes this mark, then the window state is purged/cleaned.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kl0u/flink lateness_n_gc
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2093.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2093
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commit be294b6dde8c830bde6d6944c403187d366f1c80
Author: kl0u <kklou...@gmail.com>
Date: 2016-05-31T15:13:58Z
[FLINK-3714] Add Support for "Allowed Lateness"
Handle late elements and take care
of cleaning the window state.
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