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  1. Documentation
  2. DOCS-13720

[Server] Increase maximum memberId in a replica set config (SERVER-48345)

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 4.7.0
    • manual, Server
    • None
    • 2
    • ServerDocs2020: Oct5 - Oct12, ServerDocs2020: Oct13 - Oct19
    • true

    Description

      Description

      Downstream Change Summary

      From MongoDB 4.6+, users are allowed to add new nodes with member id > 255. The only restriction is member id should be be positive number (>=0).
      https://docs.mongodb.com/manual/reference/replica-configuration/#rsconf.members[n]._id

      Description of Linked Ticket

      Currently the limit is 255. Since both Safe Reconfig and Initial Sync Semantics encourage users to use unique memberIds more often, 255 might be an undesirable constraint.

      We could do this by allowing bigger memberIds on disk in one release, but not allowing users to create them, and then allowing users to create bigger memberIds in a following release.

      Scope of changes

      Impact to Other Docs

      MVP (Work and Date)

      Resources (Scope or Design Docs, Invision, etc.)

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              andrew.feierabend@mongodb.com Andrew Feierabend (Inactive)
              backlog-server-pm Backlog - Core Eng Program Management Team
              Githook User Githook User
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              Dates

                Created:
                Updated:
                Resolved:
                1 year, 39 weeks, 2 days ago