[jira] [Created] (KAFKA-20094) Add sanity test coverage for default configuration (no environment variables)

["Chia-Ping Tsai (Jira)" <ji...@apache.org>]

Chia-Ping Tsai created KAFKA-20094:
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             Summary: Add sanity test coverage for default configuration (no environment variables)
                 Key: KAFKA-20094
                 URL: https://issues.apache.org/jira/browse/KAFKA-20094
             Project: Kafka
          Issue Type: Test
            Reporter: Chia-Ping Tsai
            Assignee: Chia-Ping Tsai


The current {{docker_sanity_test.py}} only verifies "Combined" and "Isolated" modes, which inject all Kafka configurations (e.g., {{{}KAFKA_PROCESS_ROLES{}}}) via environment variables.

This approach *masks regressions* where the default {{server.properties}} embedded in the image is corrupted or missing (such as the recent {{KAFKA_URL}} bug). The test suite effectively "fixes" the broken default config by overwriting it at runtime.



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