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Posted to reviews@spark.apache.org by "zhengruifeng (via GitHub)" <gi...@apache.org> on 2024/09/12 02:12:12 UTC

Re: [PR] [SPARK-49469][CONNECT][TESTS] Add dummy protos for expression and datatype [spark]

zhengruifeng commented on PR #47935:
URL: https://github.com/apache/spark/pull/47935#issuecomment-2345117171

   > I don't understand the use case for this. Can you explain why this is needed better?
   
   @nija-at thanks for reviews
   
   one usage case is information redaction, we can redact the sensitive fields of known nodes, once a new node was add it contains PII, the PII maybe leaked before we update the redaction logic, then we can use this `Unknown` to replace any unknown nodes.
   
   


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