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Posted to jira@kafka.apache.org by "Victor van den Hoven (Jira)" <ji...@apache.org> on 2022/11/21 08:06:00 UTC
[jira] [Comment Edited] (KAFKA-14400) KStream - KStream - LeftJoin() does not call ValueJoiner with null value
[ https://issues.apache.org/jira/browse/KAFKA-14400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17636512#comment-17636512 ]
Victor van den Hoven edited comment on KAFKA-14400 at 11/21/22 8:05 AM:
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Also with the deprecated joinWindows a diferent topology is being produced:
In line 13 and line 16 you will find a new KSTREAM-OUTERSHARED-0000000004-store.
Where is that coming from?
!Afbeelding 2.png!
was (Author: victorvandenhoven):
!Afbeelding 2.png!
> KStream - KStream - LeftJoin() does not call ValueJoiner with null value
> -------------------------------------------------------------------------
>
> Key: KAFKA-14400
> URL: https://issues.apache.org/jira/browse/KAFKA-14400
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 3.1.1, 3.3.1
> Environment: Windows PC
> Reporter: Victor van den Hoven
> Priority: Major
> Attachments: Afbeelding 2.png, SimpleStreamTopology.java, SimpleStreamTopologyTest.java
>
>
> In Kafka-streams 3.1.1 :
> When using +JoinWindows.ofTimeDifferenceWithNoGrace(Duration.ofMillis(10000))+
> the KStream {*}leftJoin{*}(KStream otherStream, ValueJoiner {_}joiner{_}, JoinWindows windows) does not seem to call the _joiner_ with null value when join predicate is not satisfied (not expected).
>
> When using deprecated +JoinWindows.of(Duration.ofMillis(10000));+
> the KStream {*}leftJoin{*}(KStream otherStream, ValueJoiner {_}joiner{_}, JoinWindows windows) does
> call the _joiner_ with null value when join predicate is not satisfied (as expected and documented).
>
> Attached you can find two files with TopologyTestDriver Unit test to reproduce.
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