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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3289

Make use of fadvise in the NM's shuffle handler

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      Description

      Using the new NativeIO fadvise functions, we can make the NodeManager prefetch map output before it's send over the socket, and drop it out of the fs cache once it's been sent (since it's very rare for an output to have to be re-sent). This improves IO efficiency and reduces cache pollution.

        Attachments

        1. MAPREDUCE-3289.branch-1.patch
          4 kB
          Brandon Li
        2. MR3289_trunk_3.txt
          13 kB
          Siddharth Seth
        3. MR3289_trunk_2.txt
          13 kB
          Siddharth Seth
        4. MR3289_trunk.txt
          9 kB
          Siddharth Seth
        5. MAPREDUCE-3289.branch-1.patch
          4 kB
          Brandon Li
        6. 3289-2.txt
          4 kB
          Todd Lipcon
        7. 3289-1.txt
          3 kB
          Todd Lipcon
        8. mr-3289.txt
          5 kB
          Todd Lipcon

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              • Assignee:
                tlipcon Todd Lipcon
                Reporter:
                tlipcon Todd Lipcon
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                • Created:
                  Updated:
                  Resolved: