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  1. Nutch
  2. NUTCH-2950

UpdateHostDb: performance improvements

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Implemented
    • 1.18
    • 1.19
    • hostdb
    • None
    • Patch Available

    Description

      This issue addresses a couple of performance improvements when creating the HostDb:

      • avoid needless conversions between hostname and URL
      • improvements of HostDb serialization (write and read)
      • parametrize logging and log less on level INFO
      • do not create DNS resolver threads if DNS look-ups are not requested by command-line options

      A patch/PR is ready. Depending on the chosen command-line options, a 10-20% speed-up should be visible if DNS look-ups, normalization and filtering are off.

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              snagel Sebastian Nagel
              snagel Sebastian Nagel
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                Updated:
                Resolved: