[jira] [Commented] (KAFKA-14294) Kafka Streams should commit transaction when no records are processed

["Sylvain Le Gouellec (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-14294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17685784#comment-17685784 ] 

Sylvain Le Gouellec commented on KAFKA-14294:
---------------------------------------------

*Workaround*

Developer can explicitly request to commit the transaction using 
{code:java}
context.commit(); {code}
after each punctate handler triggered.

> Kafka Streams should commit transaction when no records are processed
> ---------------------------------------------------------------------
>
>                 Key: KAFKA-14294
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14294
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 3.2.1
>            Reporter: Vicky Papavasileiou
>            Assignee: A. Sophie Blee-Goldman
>            Priority: Major
>             Fix For: 3.4.0
>
>         Attachments: image-2023-02-08-10-22-20-456.png
>
>
> Currently, if there are no records to process in the input topic, a transaction does not commit. If a custom punctuator code is writing to a state store (which is common practice) the producer gets fenced when trying to write to the changelog topic. This throws a TaskMigratedException and causes a rebalance. 
> A better approach would be to commit a transaction even when there are no records processed as to allow the punctuator to make progress. 



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