[GitHub] spark pull request #16989: [WIP][SPARK-19659] Fetch big blocks to disk when ...

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

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

    https://github.com/apache/spark/pull/16989#discussion_r114343655
  
    --- Diff: common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/OneForOneBlockFetcher.java ---
    @@ -100,7 +114,14 @@ public void onSuccess(ByteBuffer response) {
               // Immediately request all chunks -- we expect that the total size of the request is
               // reasonable due to higher level chunking in [[ShuffleBlockFetcherIterator]].
               for (int i = 0; i < streamHandle.numChunks; i++) {
    -            client.fetchChunk(streamHandle.streamId, i, chunkCallback);
    +            if (fetchToDisk) {
    +              final File targetFile = new File(".",
    --- End diff --
    
    Ideally we should use `DiskBlockManager.getFile` to store data in file system.


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