[jira] [Created] (KAFKA-6180) AbstractConfig.getList() should never return null

["Charly Molter (JIRA)" <ji...@apache.org>]

Charly Molter created KAFKA-6180:
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             Summary: AbstractConfig.getList() should never return null
                 Key: KAFKA-6180
                 URL: https://issues.apache.org/jira/browse/KAFKA-6180
             Project: Kafka
          Issue Type: Improvement
          Components: config
    Affects Versions: 1.0.0, 0.11.0.0, 0.10.2.1, 0.10.2.0, 0.10.1.1, 0.10.1.0
            Reporter: Charly Molter
            Priority: Trivial


AbstractConfig.getList returns null if the property is unset and there's no default.

This creates a lot of cases where we need to do null checks (and remember them).
It's good practice to just return an empty list as usually code naturally handles empty lists.



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