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https://issues.apache.org/jira/browse/KAFKA-4461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852496#comment-15852496
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ASF GitHub Bot commented on KAFKA-4461:
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GitHub user amccague opened a pull request:
https://github.com/apache/kafka/pull/2499
KAFKA-4461 Added support to ProcessorTopologyTestDriver for internal topics.
This resolves an issue in driving tests using the
ProcessorTopologyTestDriver when `groupBy()` is invoked downstream of a
processor that flags repartitioning.
Ticket: https://issues.apache.org/jira/browse/KAFKA-4461
Discussion: http://search-hadoop.com/m/Kafka/uyzND1wbKeY1Q8nH1
@dguy @guozhangwang
The contribution is my original work and I license the work to the project
under the project's open source license.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/amccague/kafka
KAFKA-4461_ProcessorTopologyTestDriver_map_groupbykey
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/2499.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 #2499
----
commit 938b8bb8b8981ea25bacc7389565e15604c4dcba
Author: Adrian McCague <amcca...@gmail.com>
Date: 2017-02-04T02:09:35Z
KAFKA-4461 Added support to ProcessorTopologyTestDriver for internal topics.
Ticket: https://issues.apache.org/jira/browse/KAFKA-4461
Discussion: http://search-hadoop.com/m/Kafka/uyzND1wbKeY1Q8nH1
----
> When using ProcessorTopologyTestDriver, the combination of map and
> .groupByKey does not produce any result
> ----------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-4461
> URL: https://issues.apache.org/jira/browse/KAFKA-4461
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.1.0
> Reporter: Hamidreza Afzali
> Labels: newbie, unit-test
>
> *Problem*
> When using ProcessorTopologyTestDriver in the latest Kafka 0.10.1, the
> combination of map and .groupByKey does not produce any result. However, it
> works fine when using KStreamTestDriver.
> The topology looks like this:
> {code}
> builder.stream(Serdes.String, Serdes.Integer, inputTopic)
> .map((k, v) => new KeyValue(fn(k), v))
> .groupByKey(Serdes.String, Serdes.Integer)
> .count(stateStore)
> {code}
> *Full examples*
> Examples for ProcessorTopologyTestDriver and KStreamTestDriver:
> https://gist.github.com/hrafzali/c2f50e7b957030dab13693eec1e49c13
> *Additional info*
> kafka-users mailing list:
> http://mail-archives.apache.org/mod_mbox/kafka-users/201611.mbox/%3CCAHwHRrVq1APVkNhP3HVqxujxRJEP9FwHV2NRcvPPsHX7Wujzng%40mail.gmail.com%3E
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