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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/07/06 09:44:42 UTC

[GitHub] [flink] zentol commented on pull request #20158: [FLINK-28357][datastream] Disallow null elements in StreamNode#typeSerializersIn

zentol commented on PR #20158:
URL: https://github.com/apache/flink/pull/20158#issuecomment-1176014691

   What is the root cause of a null serializer being passed in? Why can the serializer be null in the first place; does that happen for chained operators or...?


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