GitHub user jeyhunkarimov opened a pull request:
https://github.com/apache/kafka/pull/3570
KAFKA-4218: KIP-149, Enabling withKey interfaces in streams
This PR aims to provide key access to ValueMapper, ValueJoiner,
ValueTransformer, Initializer and Reducer interfaces. More details can be found
in
[here](https://cwiki.apache.org/confluence/display/KAFKA/KIP-149%3A+Enabling+key+access+in+ValueTransformer%2C+ValueMapper%2C+and+ValueJoiner)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jeyhunkarimov/kafka KIP-149
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/3570.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 #3570
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commit a1bbfdca86c53359ef75217ec4aaad06179d967d
Author: Jeyhun Karimov <je.kari...@gmail.com>
Date: 2017-07-21T23:18:05Z
Add withKey methods to KStream, KGroupedStream, KTable and KGroupedTable
interfaces
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