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  1. Core Server
  2. SERVER-32608

Make secondaries refresh their database metadata from the persisted database cache

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    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 3.7.1
    • 3.7.4
    • Sharding
    • Fully Compatible
    • Sharding 2018-03-12, Sharding 2018-04-09

    Description

      We can do this by creating a 'config.cache.databases' collection on shards, and persisting the databaseVersion in it.

      We also need to persist a 'refreshing' flag into the entry in 'config.cache.databases' when starting a refresh, and a 'refreshing=false' and 'lastDatabaseVersionRefreshed=<DatabaseVersion' flags on completing the refresh, and add OpObservers so that the secondary will invalidate its in-memory cache entry for the database.

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              janna.golden@mongodb.com Janna Golden
              randolph@mongodb.com Randolph Tan
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                Updated:
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