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https://issues.apache.org/jira/browse/KAFKA-19444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emanuele Sabellico updated KAFKA-19444:
---------------------------------------
    Description: 
When testing librdkafka with AK 4.0 we see that SASL GSSAPI isn't working.
The feature is missing because librdkafka is incorrectly checking for JoinGroup 
v0 only and not v0+.

When testing librdkafka versions with 4.0 we missed this case so JoinGroup v0 
and v1 were removed.

A [fix|https://github.com/confluentinc/librdkafka/pull/5131] is already merged 
in librdkafka and will be released in v2.11.0.
For users not willing to upgrade the RPC versions could be added again.

  was:
When testing librdkafka with AK 4.0 we see that SASL GSSAPI isn't working.
The feature is missing because librdkafka is incorrectly checking for JoinGroup 
v0 only and not v0+.

When testing librdkafka versions with 4.0 we missed this case so JoinGroup v0 
and v1 were removed.

A [fix|https://github.com/confluentinc/librdkafka/pull/5131] is already merged 
in librdkafka and will be released in v2.11.0.
For users not willing to upgrade the RPC versions should be added again.


> SASL GSSAPI not working with librdkafka and AK 4.x
> --------------------------------------------------
>
>                 Key: KAFKA-19444
>                 URL: https://issues.apache.org/jira/browse/KAFKA-19444
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 4.0.0
>            Reporter: Emanuele Sabellico
>            Priority: Major
>
> When testing librdkafka with AK 4.0 we see that SASL GSSAPI isn't working.
> The feature is missing because librdkafka is incorrectly checking for 
> JoinGroup v0 only and not v0+.
> When testing librdkafka versions with 4.0 we missed this case so JoinGroup v0 
> and v1 were removed.
> A [fix|https://github.com/confluentinc/librdkafka/pull/5131] is already 
> merged in librdkafka and will be released in v2.11.0.
> For users not willing to upgrade the RPC versions could be added again.



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