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  1. Core Server
  2. SERVER-27512

queryable_mmapv1 can encounter larger blocks than the default page size

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 3.4.1
    • 3.4.2, 3.5.2
    • Storage
    • None
    • Fully Compatible
    • ALL
    • v3.4
    • Storage 2017-01-23
    • 0

    Description

      queryable_mmapv1 expects there to be a 1 -> many mapping from pages to blocks. However the pagesize is currently chosen to be 2MB, while some blocks in the backup system (particularly blocks now in S3) are 16MB. The pagesize should be chosen more carefully with respect to the block size.

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              daniel.gottlieb@mongodb.com Daniel Gottlieb
              daniel.gottlieb@mongodb.com Daniel Gottlieb
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                Created:
                Updated:
                Resolved: