[jira] [Resolved] (KAFKA-14609) Kafka Streams Processor API cannot use state stores

["Bill Bejeck (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-14609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bill Bejeck resolved KAFKA-14609.
---------------------------------
    Resolution: Fixed

Fixed by https://issues.apache.org/jira/browse/KAFKA-14388

> Kafka Streams Processor API cannot use state stores
> ---------------------------------------------------
>
>                 Key: KAFKA-14609
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14609
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>    Affects Versions: 3.3.0
>            Reporter: Philipp Schirmer
>            Priority: Major
>
> The recently introduced Kafka Streams Processor API (since 3.3, https://issues.apache.org/jira/browse/KAFKA-13654) likely has a bug with regards to using state stores. The [getStateStore|https://javadoc.io/static/org.apache.kafka/kafka-streams/3.3.1/org/apache/kafka/streams/processor/api/ProcessingContext.html#getStateStore-java.lang.String-] method returns null, even though the store has been registered according to the docs. The old transformer API still works. I created a small project that demonstrates the behavior. It uses both methods to register a store for the transformer, as well as the processor API: https://github.com/bakdata/kafka-streams-state-store-demo/blob/main/src/test/java/com/bakdata/kafka/StreamsStateStoreTest.java



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