Github user srdo commented on the issue: https://github.com/apache/storm/pull/1999 @hmcl Either one is fine by me. Keeping it consistent with the old spout is probably the best solution. The only case where defaulting to emitting nulls makes sense is if the user supplies a RecordTranslator that sometimes returns null erroneously, because they'll then see the bug when they get unexpected nulls, but I don't think it's a big problem.
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