[jira] [Created] (KAFKA-6756) client.id and group.id validation in the old vs new consumer

["Badai Aqrandista (JIRA)" <ji...@apache.org>]

Badai Aqrandista created KAFKA-6756:
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             Summary: client.id and group.id validation in the old vs new consumer
                 Key: KAFKA-6756
                 URL: https://issues.apache.org/jira/browse/KAFKA-6756
             Project: Kafka
          Issue Type: Bug
          Components: clients
    Affects Versions: 1.1.0, 0.10.2.1
            Reporter: Badai Aqrandista


It looks like the old consumer that is based on the Scala code validates "client.id" and "group.id" using this code:

[https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/common/Config.scala#L25]

[https://github.com/apache/kafka/blob/trunk/core/src/main/scala/kafka/consumer/ConsumerConfig.scala#L60]

 

However, the new consumer uses the Java code that does not validate "client.id" and "group.id" at all here:

[https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/ConsumerConfig.java#L264]

[https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/ConsumerConfig.java#L298]

So the new consumer does not validate "client.id" and "group.id" like the old consumer. Either way, the documentation never specify the valid character for "client.id" and "group.id".

Is this a bug or by design?



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