vanzin edited a comment on issue #26609: [SPARK-29971] Fix multiple possible 
buffer leaks in `TransportFrameDecoder/TransportCipher`
URL: https://github.com/apache/spark/pull/26609#issuecomment-557203709
 
 
   Still not following you.
   
   `feedData` is called once in `channelRead`, and the contract in the code is 
that all that buffer's data must be read in that same call to `channelRead`. So 
you can release the buffer in `channelRead` just fine as far as I can see. 
`close` doesn't need to do anything.
   
   (You need to release the buffer in `channelRead` in any case, don't you? 
Since `close` is not called for each call to `channelRead`).

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