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  1. Hadoop Common
  2. HADOOP-13425 IPC layer optimizations
  3. HADOOP-13438

Optimize IPC server protobuf decoding

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 2.8.0, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      The current use of the protobuf API uses an expensive code path. The builder uses the parser to instantiate a message, then copies the message into the builder. The parser is creating multi-layered internally buffering streams that cause excessive byte[] allocations.

      Using the parser directly with a coded input stream backed by the byte[] from the wire will take a fast-path straight to the pb message's ctor. Substantially less garbage is generated.

      Attachments

        1. HADOOP-13438.patch.1
          26 kB
          Daryn Sharp
        2. HADOOP-13438.patch
          21 kB
          Daryn Sharp

        Issue Links

          breaks

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-13473 Tracing in IPC Server is broken

          • Major - Major loss of function.
          • Resolved
          is required by

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-13465 Design Server.Call to be extensible for unified call queue

          • Major - Major loss of function.
          • Resolved
          requires

          Sub-task - The sub-task of the issue HADOOP-13426 More efficiently build IPC responses

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              daryn Daryn Sharp
              daryn Daryn Sharp
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              Dates

                Created:
                Updated:
                Resolved: