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  1. Hadoop Common
  2. HADOOP-9669

Reduce the number of byte array creations and copies in XDR data manipulation

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.1.1-beta
    • nfs
    • None

    Description

      XDR.writeXxx(..) methods ultimately use the static XDR.append(..) for writing each data type. The static append creates a new array and copy data. Therefore, for a singe reply such as RpcAcceptedReply.voidReply(..), there are multiple array creations and array copies. For example, there are at least 6 array creations and array copies for RpcAcceptedReply.voidReply(..).

      Attachments

        1. HADOOP-9669.patch
          24 kB
          Haohui Mai
        2. HADOOP-9669.001.patch
          24 kB
          Haohui Mai
        3. HADOOP-9669.002.patch
          24 kB
          Haohui Mai
        4. HADOOP-9669.003.patch
          26 kB
          Haohui Mai

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-9966 Refactor XDR code into XDRReader and XDRWriter

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-9967 Zero copies in hdfs-nfs

          • Major - Major loss of function.
          • Open

          Activity

            People

              wheat9 Haohui Mai
              szetszwo Tsz-wo Sze
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              Dates

                Created:
                Updated:
                Resolved: