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https://issues.apache.org/jira/browse/FLINK-4866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15594169#comment-15594169
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ASF GitHub Bot commented on FLINK-4866:
---------------------------------------
GitHub user wuchong opened a pull request:
https://github.com/apache/flink/pull/2672
[FLINK-4866] [streaming] Make Trigger.clear() Abstract to Enforce
Implementation
Thanks for contributing to Apache Flink. Before you open your pull request,
please take the following check list into consideration.
If your changes take all of the items into account, feel free to open your
pull request. For more information and/or questions please refer to the [How To
Contribute guide](http://flink.apache.org/how-to-contribute.html).
In addition to going through the list, please provide a meaningful
description of your changes.
- [x] General
- The pull request references the related JIRA issue ("[FLINK-XXX] Jira
title text")
- The pull request addresses only one issue
- Each commit in the PR has a meaningful commit message (including the
JIRA id)
- [x] Documentation
- Documentation has been added for new functionality
- Old documentation affected by the pull request has been updated
- JavaDoc for public methods has been added
- [x] Tests & Build
- Functionality added by the pull request is covered by tests
- `mvn clean verify` has been executed successfully locally or a Travis
build has passed
This PR makes Trigger.clear() method to be abstract, so that implementors
of custom triggers will not forget to clean up their state/timers properly.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wuchong/flink trigger-FLINK-4866
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2672.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 #2672
----
commit 313b2a6f1871357b3281e623423f49ef84ad59a1
Author: Jark Wu <wuchong...@alibaba-inc.com>
Date: 2016-10-21T05:46:45Z
[FLINK-4866] [streaming] Make Trigger.clear() Abstract to Enforce
Implementation
----
> Make Trigger.clear() Abstract to Enforce Implementation
> -------------------------------------------------------
>
> Key: FLINK-4866
> URL: https://issues.apache.org/jira/browse/FLINK-4866
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Reporter: Aljoscha Krettek
> Assignee: Jark Wu
>
> If the method is not abstract implementors of custom triggers will not
> realise that it could be necessary and they will likely not clean up their
> state/timers properly.
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