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  1. Hadoop HDFS
  2. HDFS-13702

Remove HTrace hooks from DFSClient to reduce CPU usage

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0
    • 3.2.0, 3.1.1, 3.0.4
    • performance
    • None

    Description

      I am seeing DFSClient.newReaderTraceScope take ~15% CPU in a teravalidate workload even when HTrace is disabled. This is because it stringifies several integers. We should avoid all allocation and stringification when htrace is disabled.

      Attachments

        1. hdfs-13702.patch
          21 kB
          Todd Lipcon
        2. hdfs-13702.patch
          27 kB
          Todd Lipcon
        3. hdfs-13702.patch
          28 kB
          Todd Lipcon

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              tlipcon Todd Lipcon
              tlipcon Todd Lipcon
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              Dates

                Created:
                Updated:
                Resolved: