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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

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 4.1.10
    • Replication
    • None
    • Fully Compatible
    • ALL
    • Repl 2019-03-25
    • 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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              tess.avitabile@mongodb.com Tess Avitabile (Inactive)
              tess.avitabile@mongodb.com Tess Avitabile (Inactive)
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                Updated:
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