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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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    • Type: Icon: Bug Bug
    • Resolution: Duplicate
    • Priority: Icon: Major - P3 Major - P3
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    • Affects Version/s: 3.6.7
    • Component/s: None
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      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.
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      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")
    }
  }
}

            Assignee:
            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
            Reporter:
            james.kovacs@mongodb.com James Kovacs
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              Created:
              Updated:
              Resolved:
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