GitHub user knaufk reopened a pull request:
https://github.com/apache/flink/pull/1944
Timer coalescing across keys and cleanup of unused trigger tasks
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Per timestamp only one TriggerTask is registered at
the runtime context. When the first timer is registered a new TriggerTask
is sheduled. When no timer is registered anymore for a specific timestamp
the corresponding trigger task is canceled and hence removed.
The ScheduledFutures to cancel trigger tasks are not checkpointed. So
cleanup of trigger tasks will not work after a failure.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/knaufk/flink FLINK-3669
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1944.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 #1944
----
commit e1f7a5b0c448516e7c42bfc4938755a43e3bcae0
Author: Konstantin Knauf <konstantin.kn...@tngtech.com>
Date: 2016-04-05T17:59:19Z
Timer coalescing across keys and cleanup of unused trigger tasks
Per timestamp only one TriggerTask is registered at
the runtime context. When the first timer is registered a new TriggerTask
is sheduled. When no timer is registered anymore for a specific timestamp
the corresponding trigger task is canceled and hence removed.
The ScheduledFutures to cancel trigger tasks are not checkpointed. So
cleanup of trigger tasks will not work after a failure.
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