[jira] [Created] (KAFKA-14848) KafkaConsumer incorrectly passes locally-scoped serializers to FetchConfig

["Kirk True (Jira)" <ji...@apache.org>]

Kirk True created KAFKA-14848:
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             Summary: KafkaConsumer incorrectly passes locally-scoped serializers to FetchConfig
                 Key: KAFKA-14848
                 URL: https://issues.apache.org/jira/browse/KAFKA-14848
             Project: Kafka
          Issue Type: Bug
          Components: clients, consumer
    Affects Versions: 3.5.0
            Reporter: Kirk True
            Assignee: Kirk True


[~rayokota] found some {{{}NullPointerException{}}}s that originate because of a recently introduced error in the {{KafkaConsumer}} constructor. The code was changed to  pass the serializers variables into the {{FetchConfig}} constructor. However, this code change incorrectly used the locally-scoped variables, not the instance-scoped variables. Since the locally-scoped variables could be {{{}null{}}}, this results in the {{FetchConfig}} storing {{null}} references, leading to downstream breakage.



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