reswqa commented on PR #3147:
URL: https://github.com/apache/celeborn/pull/3147#issuecomment-2723971754

   > If Flink side wants to handle this type of exception, it is best to 
tolerate the scenario of Celeborn upgrades, eg retry client within a reasonable 
time at least.
   
   Yes. IMO, rerun upstream(by `PartitionConnectionException`)in this scenario 
is too radical, and most of the time retrying can solve the problem. The client 
should at least have some retry mechanism. 


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