dongjoon-hyun commented on issue #26108: [SPARK-26154][SS] Streaming left/right outer join should not return outer nulls for already matched rows URL: https://github.com/apache/spark/pull/26108#issuecomment-577430491 As written in the migration guide, the situation is the same in 3.0.0 with old stored data, isn't it? AFAIK, there is no available correctness fix for the existing stored data (and queries). What we need in 2.4.5 is the same thing with 3.0.0 (a correct behavior of new queries). Also, although we backport this with `stateFormatVersion=1`, it works as a legacy buggy mode, doesn't it?
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