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  1. Core Server
  2. SERVER-40193

Do not propagate commit point through heartbeats when FCV=4.0

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 4.1.10
    • Component/s: Replication
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL
    • Sprint:
      Repl 2019-03-25
    • Linked BF Score:
      17

      Description

      In SERVER-39367, we started propagating the majority commit point through heartbeats. This causes sync source cycles in mixed 4.2/4.0 replica sets, since 4.0 nodes will sync from a node with the same lastApplied if it has a higher lastOpCommitted. We will not propagate the commit point through heartbeats unless FCV=4.2, so that there are no 4.0 nodes in the set.

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              Assignee:
              tess.avitabile Tess Avitabile
              Reporter:
              tess.avitabile Tess Avitabile
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                Updated:
                Resolved: