Error "Cannot read property 'wireProtocolHandler' of null" when server is not ready

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    • Type: Bug
    • Resolution: Gone away
    • Priority: Major - P3
    • None
    • Affects Version/s: 2.2.29
    • Component/s: None
    • Environment:
      Rs: PRIMARY + 2 x SECONDAY
      Node: 4.8.3
      mongodb: 2.2.29,branch `fix-url-parse-options`
    • None
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      I have the following setup

      {
  "mongo1": {
    "type": "PRIMARY",
    "tags": {
      "continent": "america"
    }
  },
  "mongo2": {
    "type": "SECONDARY",
    "tag": {
      "continent": "europe"
    }
  },
  "mongo3": {
    "type": "SECONDARY",
    "tag": {
      "continent": "africa"
    }
  }
}

      and mongodb client is located in europe and trying to connect to africa with the following options

      connectionUrl = 'mongodb://mongo1:27017/data?replicaSet=rs'
{
    replicaSet: 'rs',
    connectWithNoPrimary: true,
    readPreference: new ReadPreference('secondary', [
        {
            'continent': 'africa'
        }
    ])
};

      The client tries to connect, MongoClient.connect success handler is called and the client tries a find and recievies an error(because mongo3 is located in africa and there is a big latency between africa and europe):

      TypeError: Cannot read property 'wireProtocolHandler' of null
    at nextFunction (/wk/bit/libs/perf/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:568:31)
    at Cursor.next [as _next] (/wk/bit/libs/perf/node_modules/mongodb/node_modules/mongodb-core/lib/cursor.js:692:3)
    at nextObject (/wk/bit/libs/perf/node_modules/mongodb/lib/cursor.js:679:8)
    at Cursor.next (/wk/bit/libs/perf/node_modules/mongodb/lib/cursor.js:269:12)
    at findOne (/wk/bit/libs/perf/node_modules/mongodb/lib/collection.js:1415:10)
    at Collection.findOne (/wk/bit/libs/perf/node_modules/mongodb/lib/collection.js:1401:44)
    at Context.<anonymous> (/wk/bit/libs/perf/test/test.js:58:38)
    at callFnAsync (/usr/local/lib/node_modules/mocha/lib/runnable.js:368:21)
    at Test.Runnable.run (/usr/local/lib/node_modules/mocha/lib/runnable.js:318:7)
    at Runner.runTest (/usr/local/lib/node_modules/mocha/lib/runner.js:444:10)
    at /usr/local/lib/node_modules/mocha/lib/runner.js:550:12
    at next (/usr/local/lib/node_modules/mocha/lib/runner.js:361:14)
    at /usr/local/lib/node_modules/mocha/lib/runner.js:371:7
    at next (/usr/local/lib/node_modules/mocha/lib/runner.js:295:14)
    at Immediate._onImmediate (/usr/local/lib/node_modules/mocha/lib/runner.js:339:5)
    at processImmediate [as _immediateCallback] (timers.js:396:17)

      If I remove connectWithNoPrimary: true from options OR I add mongo3 server to connectionUrl:'mongodb://mongo1:27017,mongo3:27017/data?replicaSet=rs' everything will work.

      What is the right behaviour?

            Assignee:
            Matt Broadstone
            Reporter:
            Marius Ciocan
            None
            Votes:
            1 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: