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  1. Documentation
  2. DOCS-10939

Add change to {getParameter: 1, featureCompatibilityVersion: 1} for Server 3.6

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    • Icon: Task Task
    • Resolution: Fixed
    • Icon: Major - P3 Major - P3
    • 3.6.0-rc2
    • None
    • manual, Server
    • None

    Description

      After SERVER-31630, the output of {getParameter: 1, featureCompatibilityVersion: 1} on a 3.6 mongod can have four possible returns:

      Fully downgraded featureCompatibilityVersion:

      {featureCompatibilityVersion: {version: "3.4"}, ok: 1}
      

      Upgrading featureCompatibilityVersion:

      {featureCompatibilityVersion: {version: "3.4", targetVersion: "3.6"}, ok: 1}
      

      Downgrading featureCompatibilityVersion:

      {featureCompatibilityVersion: {version: "3.4", targetVersion: "3.4"}, ok: 1}
      

      Fully upgraded featureCompatibilityVersion:

      {featureCompatibilityVersion: {version: "3.6"}, ok: 1}
      

      We should document the change to the getParameter output. We should also include in the downgrade instructions to wait for each node to have fully downgraded featureCompatibilityVersion before replacing the binary.

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            kay.kim@mongodb.com Kay Kim (Inactive)
            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
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            Dates

              Created:
              Updated:
              Resolved:
              6 years, 13 weeks ago