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  1. Core Server
  2. SERVER-52919

Wire compression not enabled for initial sync

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 4.4.1, 4.2.10
    • 4.9.0, 4.2.12, 4.4.4
    • None
    • Fully Compatible
    • ALL
    • v4.4, v4.2
    • Service arch 2020-12-28
    • 0

    Description

      Initial sync for identical highly compressible data sets on 4.0, 4.2, 4.4:

      Total bytes transferred ("InOctets") is much higher for 4.4 and 4.2 than 4.0, and snappy decompressor metrics show that compression is not being used.

      Impact on performance is not certain as I'm not sure whether this test is limited by network bandwidth, but if it is impacting performance, then

      • Initial sync time for 4.2 is longer than 4.0 because of this
      • Initial sync time for 4.4 is a little less than than 4.0 in spite of this

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              amirsaman.memaripour@mongodb.com Amirsaman Memaripour
              bruce.lucas@mongodb.com Bruce Lucas
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              Dates

                Created:
                Updated:
                Resolved: