[jira] [Commented] (KAFKA-18659) librdkafka compressed produce fails unless api versions returns produce v0

["Ismael Juma (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-18659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17921844#comment-17921844 ] 

Ismael Juma commented on KAFKA-18659:
-------------------------------------

PR: https://github.com/apache/kafka/pull/18727

> librdkafka compressed produce fails unless api versions returns produce v0
> --------------------------------------------------------------------------
>
>                 Key: KAFKA-18659
>                 URL: https://issues.apache.org/jira/browse/KAFKA-18659
>             Project: Kafka
>          Issue Type: Sub-task
>            Reporter: Ismael Juma
>            Assignee: Ismael Juma
>            Priority: Blocker
>             Fix For: 4.0.0
>
>
> A large percentage of non Java clients are unable to produce compressed records (with lz4, gzip, snappy) to Apache Kafka 4.0 due to a bug in how librdkafka evaluates whether compression is supported - if the api versions response does not include produce v0, compression with these formats is disallowed (zstd checks a newer version of produce).
> To fix this, there are two options:
>  # Update KIP-896 not to remove produce v0-v2 and KIP-724 not to remove support for producing messages with record format v0-v1.
>  # Update api versions to return produce v0-v2 as supported, but reject requests with such versions with `UnsupportedVersion` error.
> The second option seems better to me, even though it's not ideal.



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