[GitHub] flink issue #4559: [FLINK-7468][network] Implement sender backlog logic for ...

[NicoK]

Github user NicoK commented on the issue:

    https://github.com/apache/flink/pull/4559
  
    good catch, I completely missed the code path in `SpillableSubpartition` - 
I agree with putting it under `synchronized(buffers)`


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