[jira] [Commented] (KAFKA-5369) Producer hangs on metadata fetch from broker in security authorization related failures and no meaningful exception is thrown

["Rajini Sivaram (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-5369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16036785#comment-16036785 ] 

Rajini Sivaram commented on KAFKA-5369:
---------------------------------------

[~Koelli] Diagnostics were improved under KAFKA-5179. There is also a KIP open to further improve this: https://cwiki.apache.org/confluence/display/KAFKA/KIP-152+-+Improve+diagnostics+for+SASL+authentication+failures.

> Producer hangs on metadata fetch from broker in security authorization related failures and no meaningful exception is thrown
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5369
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5369
>             Project: Kafka
>          Issue Type: Improvement
>          Components: consumer, producer 
>    Affects Versions: 0.10.0.0
>            Reporter: Koelli Mungee
>
> Debugging security related misconfigurations becomes painful since the only symptom is a hang trying to fetch the metadata on the producer side
> at java.lang.Object.wait(Native Method) 
> at org.apache.kafka.clients.Metadata.awaitUpdate(Metadata.java:129) 
> at org.apache.kafka.clients.producer.KafkaProducer.waitOnMetadata(KafkaProducer.java:528) 
> at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:441) 
> at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:430) 
> at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:353)
> There are no meaningful errors on the broker side either. Enabling Djavax.net.debug=all and/or Dsun.security.krb5.debug=true is an option, however this should be improved to get a meaningful error.



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