1996fanrui commented on PR #22761:
URL: https://github.com/apache/flink/pull/22761#issuecomment-1635674114

   Thanks for your quick review again!
   
   > Don't forget to squash your commits before merging as soon as the tests 
are green. 
   
   Done.
   
   > It also makes sense to check the benchmarks since this code is sensitive 
to performance(at least you can take a look at benchmarks after the merge to be 
sure that nothing was degraded.
   
   Sorry, I don't know why this PR is sensitive to performance, I may have 
missed some background. As I understand, it just add buffer through 
ResultPartition instead of adding buffer to Subpartition directly.
   
   Could you give more information? thanks a lot.
   
   BTW, do you think this fix should be backported to 1.17 and 1.16? It's a 
bug, however it only affects the metric.
   


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