HyukjinKwon commented on issue #24992: [SPARK-28194][SQL] Judge whether to reorder joinKeys to prevent None.get in EnsureRequirements URL: https://github.com/apache/spark/pull/24992#issuecomment-508436578 @turboFei, the query looks still complicated. Since you are able to reproduce this, it would be much helpful if you are able to narrow down and make a self-contained reproducer so that other people can verify the root cause more easily. Just by looking up the query, seems hard to review further.
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