[GitHub] spark pull request #18388: [SPARK-21175] Reject OpenBlocks when memory short...

[cloud-fan <gi...@git.apache.org>]

Github user cloud-fan commented on a diff in the pull request:

    https://github.com/apache/spark/pull/18388#discussion_r128149914
  
    --- Diff: common/network-common/src/main/java/org/apache/spark/network/server/OneForOneStreamManager.java ---
    @@ -53,9 +56,13 @@
         // that the caller only requests each chunk one at a time, in order.
         int curChunk = 0;
     
    +    // Used to keep track of the number of chunks being transferred and not finished yet.
    +    AtomicLong chunksBeingTransferred;
    --- End diff --
    
    according to you usage, seems `volatile long chunksBeingTransferred` is enough?


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