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  1. Core Server
  2. SERVER-57026

Regular expression is invalid UTF-8 while enabling mongo backwards-incompatible 4.0 features

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    • Type: Icon: Question Question
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
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      I have upgraded my mongo QA environment from v3.6 to v4.0.23. I am running sharded cluster with 14 mongos, 3 config servers and 3 shard servers. I have upgraded all three components successfully to v4.0.23.

      Now I am trying execute last step of upgrade v3.6 to v4.0.23 which is enabling backwards-incompatible 4.0 features. But I am getting below error, even if I retried command, restarted mongos, config and shard servers.

      // mongos> db.adminCommand( { setFeatureCompatibilityVersion: "4.0" } )
{
        "ok" : 0,
        "errmsg" : "Regular expression is invalid UTF-8",
        "code" : 5108300,
        "codeName" : "Location5108300",
        "operationTime" : Timestamp(1621314272, 3),
        "$clusterTime" : {
                "clusterTime" : Timestamp(1621314272, 3),
                "signature" : {
                        "hash" : BinData(0,"F/Ukgpx8acf5fBuOtKfw0gyz3L4="),
                        "keyId" : NumberLong("6934901981374840833")
                }
        }
}

      {{}}

            Assignee:
            edwin.zhou@mongodb.com Edwin Zhou
            Reporter:
            sandipdivekar1@gmail.com sandip Divekar
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              Created:
              Updated:
              Resolved: