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https://issues.apache.org/jira/browse/FLINK-5720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15995134#comment-15995134
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ASF GitHub Bot commented on FLINK-5720:
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GitHub user zentol opened a pull request:
https://github.com/apache/flink/pull/3816
[FLINK-5720] Deprecate DataStream#fold()
This PR deprecates the various `DataStream#fold()` methods and all related
internal classes.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zentol/flink 5720_deprecate_folding
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3816.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 #3816
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commit 40fd483992f7820f8e6f7b26cd7e95a6d5f71507
Author: zentol <ches...@apache.org>
Date: 2017-05-03T13:49:03Z
[FLINK-5720] Deprecate DataStream#fold()
----
> Deprecate "Folding" in all of DataStream API
> --------------------------------------------
>
> Key: FLINK-5720
> URL: https://issues.apache.org/jira/browse/FLINK-5720
> Project: Flink
> Issue Type: Improvement
> Components: DataStream API
> Reporter: Aljoscha Krettek
> Assignee: Chesnay Schepler
> Priority: Blocker
> Fix For: 1.3.0
>
>
> Folding is an operation that cannot be done incrementally in a distributed
> way and that also cannot be done on merging windows. Now that we have
> {{AggregatingState}} and aggregate operations we should deprecate folding in
> the APIs and deprecate {{FoldingState}}.
> I suggest to remove folding completely in Flink 2.0
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