Ron Dagostino created KAFKA-10556:
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Summary: NPE if sasl.mechanism is unrecognized
Key: KAFKA-10556
URL: https://issues.apache.org/jira/browse/KAFKA-10556
Project: Kafka
Issue Type: Task
Reporter: Ron Dagostino
Assignee: Ron Dagostino
If a client sets an unknown sasl.mechanism value (e.g. mistakenly setting
"PLAN" instead of "PLAIN") the client sees a NullPointerException that only
indirectly indicates the nature of the problem. For example:
java.lang.NullPointerException
at
org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.sendSaslClientToken(SaslClientAuthenticator.java:430)
It is better to see an exception that directly states what the issue is. For
example, the initial version of this PR would provide the following information:
Caused by: org.apache.kafka.common.errors.SaslAuthenticationException: Failed
to create SaslClient with mechanism PLAN
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