Byron Ruth created KAFKA-3417:
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Summary: Invalid characters in config not be caught early enough
Key: KAFKA-3417
URL: https://issues.apache.org/jira/browse/KAFKA-3417
Project: Kafka
Issue Type: Bug
Components: config
Affects Versions: 0.9.0.1
Reporter: Byron Ruth
Priority: Minor
I ran into an error using a {{client.id}} with invalid characters (per the
[config
validator|https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/common/Config.scala#L25-L35]).
I was able to get that exact error using the {{kafka-console-consumer}}
script, presumably because I supplied a consumer properties file and it
validated prior to hitting the server. However, when I use a client library
(sarama for Go in this case), an error in the metrics subsystem is thrown
[here|https://github.com/apache/kafka/blob/977ebbe9bafb6c1a6e1be69620f745712118fe80/clients/src/main/java/org/apache/kafka/common/metrics/Metrics.java#L380].
Assuming the cause os related to the invalid characters, when the request
header is decoded, the {{clientId}} should be validated prior to being used?
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