HeartSaVioR commented on issue #23634: [SPARK-26154][SS] Streaming left/right outer join should not return outer nulls for already matched rows URL: https://github.com/apache/spark/pull/23634#issuecomment-457407371 The thing is `predicate for determining late rows` and `predicate for evicting rows` can be different in streaming join, which produces different situation between left side and right side.
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