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  1. Documentation
  2. DOCS-13408

Investigate changes in SERVER-46089: Arbiters don't remove configTerm on downgrade

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      Description

      Downstream Change Summary

      4.4 downgrade of arbiter should delete the arbiter data directory as we did for 4.2 downgrade.
      https://docs.mongodb.com/manual/release-notes/4.2-downgrade-replica-set/#downgrade-arbiter-replica-set-member-if-any

      Description of Linked Ticket

      Arbiters don't track FCV so they won't remove the configTerm from their on disk ReplSetConfig object on downgrade. This causes a 4.2 node to fail parsing of the config on restart after binary downgrade.

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            backlog-server-pm Backlog - Core Eng Program Management Team
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              Created:
              Updated:
              Resolved:
              3 years, 48 weeks, 1 day ago