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https://issues.apache.org/jira/browse/KAFKA-3121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109381#comment-15109381
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ASF GitHub Bot commented on KAFKA-3121:
---------------------------------------
GitHub user guozhangwang opened a pull request:
https://github.com/apache/kafka/pull/795
KAFKA-3121: Remove aggregatorSupplier and add Reduce functions
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/guozhangwang/kafka K3121s1
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/795.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 #795
----
commit 10837b24c7a8af0e2843a8ae2102610dc28aff3c
Author: Guozhang Wang <[email protected]>
Date: 2016-01-20T02:48:07Z
refactor aggregate and add reduce
commit c8fe67f78809276b2c9aa3ca4f36d64b79483c1a
Author: Guozhang Wang <[email protected]>
Date: 2016-01-20T06:48:19Z
add new files
commit ad90555eee8ce7de799a258c175522a95cafb372
Author: Guozhang Wang <[email protected]>
Date: 2016-01-20T20:52:24Z
KAFKA-3121: Remove AggregateSupplier for aggregate and add reduce functions
----
> KStream DSL API Improvement
> ---------------------------
>
> Key: KAFKA-3121
> URL: https://issues.apache.org/jira/browse/KAFKA-3121
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Guozhang Wang
> Assignee: Guozhang Wang
>
> From some collected feedbacks, here is a list of potential improvements that
> we want to make:
> 1. Remove AggregateSupplier for aggregate, and provide more built-in
> aggregations.
> 2. Join to return KeyValue<>.
> 3. "Windows" class syntax-sugers.
> 4. Add print() to KTable / KStream.
> 5. flatMap / flatMapValues to return arrays in addition to Iterable.
> 6. make the API function names aligned with Java 8+, e.g. filterOut ->
> filterNot
> 7. collapse process() and transform() in KStream.
> 8. validate Streaming configs and allow passing properties to KafkaStreaming.
> 9. Rename KafkaStreaming to Streams.
> Also move some of the state package into internals, and create a new
> top-level common folder with KeyValue / etc in it.
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