[GitHub] flink issue #5032: [FLINK-8090] [DataStream] Improve the error message for d...

[xccui]

Github user xccui commented on the issue:

    https://github.com/apache/flink/pull/5032
  
    Hi @aljoscha, I wonder if you could help review this PR when you are 
convenient.
    
    Thanks, Xingcan


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