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  1. Core Server
  2. SERVER-37049

MongoDB 3.6.7 arbiters continuously log "Using sessions while not fully upgraded to FCV3.6" even though replset is FCV3.6

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: 3.6.7
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Operating System:
      ALL
    • Steps To Reproduce:
      Hide

      m 3.6.7
      mlaunch init --replicaset --nodes 2 --arbiter
      tail -f data/replset/arb/mongod.log
       

      Arbiter log shows a constant stream of:

      2018-09-07T11:03:32.057-0600 I -        [conn12] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:03:33.089-0600 I -        [conn11] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:03:34.060-0600 I -        [conn12] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:03:35.091-0600 I -        [conn11] Using sessions while not fully upgraded to FCV3.6
      

      mlaunch stop
      m 3.6.6
      mlaunch start
      

      Arbiter restarts and FCV messages stop appearing.

      mlaunch stop
      m 3.6.7
      mlaunch start
      

      Arbiter restarts and FCV messages spam the arbiter log again.

      Show
      m 3.6.7 mlaunch init --replicaset --nodes 2 --arbiter tail -f data/replset/arb/mongod.log Arbiter log shows a constant stream of: 2018-09-07T11:03:32.057-0600 I - [conn12] Using sessions while not fully upgraded to FCV3.6 2018-09-07T11:03:33.089-0600 I - [conn11] Using sessions while not fully upgraded to FCV3.6 2018-09-07T11:03:34.060-0600 I - [conn12] Using sessions while not fully upgraded to FCV3.6 2018-09-07T11:03:35.091-0600 I - [conn11] Using sessions while not fully upgraded to FCV3.6 mlaunch stop m 3.6.6 mlaunch start Arbiter restarts and FCV messages stop appearing. mlaunch stop m 3.6.7 mlaunch start Arbiter restarts and FCV messages spam the arbiter log again.
    • Case:

      Description

      Arbiters in MongoDB 3.6.7 continuously log the following once per second even though the FCV for the replset is FCV3.6:

      2018-09-07T11:14:41.656-0600 I -        [conn6] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:14:42.657-0600 I -        [conn10] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:14:43.657-0600 I -        [conn6] Using sessions while not fully upgraded to FCV3.6
      2018-09-07T11:14:44.658-0600 I -        [conn10] Using sessions while not fully upgraded to FCV3.6
      

       
      Verifying FCV version...

      > db.adminCommand({getParameter:1, featureCompatibilityVersion:1})
      {
        "featureCompatibilityVersion": {
          "version": "3.6"
        },
        "ok": 1,
        "operationTime": Timestamp(1536341388, 1),
        "$clusterTime": {
          "clusterTime": Timestamp(1536341388, 1),
          "signature": {
            "hash": BinData(0, "AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
            "keyId": NumberLong("0")
          }
        }
      }
      

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              Assignee:
              tess.avitabile Tess Avitabile
              Reporter:
              james.kovacs James Kovacs
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                Dates

                Created:
                Updated:
                Resolved: