hehuiyuan commented on issue #24270: [SPARK-27343][KAFKA][SS]Avoid hardcoded for spark-sql-kafka-0-10 URL: https://github.com/apache/spark/pull/24270#issuecomment-481100585 > @hehuiyuan I see 2 ways: > > * MAX_OFFSET_PER_TRIGGER.toLowerCase > * Find out whether `maxOffsetsPerTrigger` works at all on other places (I have a long standing suspicion that parameters with DSv2 are lowercase) > > Since the first one covers your PR and the second is significantly harder I think your latest suggestion is fine. > > UPDATE: since its a long standing suspicion of mine double checked `maxOffsetsPerTrigger` path whether all lowercase can be used: > > * `KafkaSourceProvider` uses caseInsensitiveParams which is lowercase all the time => Good > * `KafkaMicroBatchStream` uses `CaseInsensitiveStringMap` where get operation uses lowercase [conversion](https://github.com/apache/spark/blob/master/sql/catalyst/src/main/java/org/apache/spark/sql/util/CaseInsensitiveStringMap.java#L92). => Good > * `KafkaSource` uses `CaseInsensitiveMap` where get operation uses lowercase [conversion](https://github.com/apache/spark/blob/215609def22da14c464b37374ceae4f53a39a145/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CaseInsensitiveMap.scala#L35). => Good I think you may be right.
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