zhijiangW commented on issue #7835: [FLINK-11750][network] Replace 
IntermediateResultPartitionID with ResultPartitionID in 
ResultPartitionDeploymentDescriptor
URL: https://github.com/apache/flink/pull/7835#issuecomment-480765630
 
 
   Thanks for reviews and above suggestions @azagrebin .
   
   Your concern is reasonable, and I think this issue could further cover two 
aspects:
   
   1. How to generate the `ResultPartitionID`? 
   `ResultPartitionID ` is just a unique identifier for partition, even I think 
the `ResultPartitionID` might not cover `ExecutionAttepmtID` future. 
   
   2. Who to generate the `ResultPartitionID`?
   It could be created by `ShuffleMaster` or `ShuffleService`. In current 
implementation, `ResultPartitionID` is generated by `ShuffleMaster` in 
`InputChannelDeploymentDescriptor` on consumer side, but it is generated by 
`ShuffleService` on producer side. so it is not consistent ATM.
   
   The motivation for this PR is simplifying the interface method of 
`ShuffleService#createResultPartitionWriter` to not pass explicit parameter of 
`ExecutionAttemptID` which could be got from 
`ResultPartitionDeploymentDescriptor` instead. Then the creation of 
`ResultPartiitonID` is consistent on both sides.
   

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