ReplicaSet throws error while creating: MongoError: not master

Versions

• NodeJS: 14.17.5
• mongodb-memory-server-*: 7.3.6
• mongodb(the binary version): 4.4.4
• system: MacOS

package: mongo-memory-server

What is the Problem?

When I try to create MongoMemoryReplSet I get MongoError: not master, but this seems to happen only when I’m running at least two test files in jest.

This is the exact error that I get:

    MongoError: not master

      at MessageStream.messageHandler (node_modules/mongodb/lib/cmap/connection.js:268:20)
      at processIncomingData (node_modules/mongodb/lib/cmap/message_stream.js:144:12)
      at MessageStream._write (node_modules/mongodb/lib/cmap/message_stream.js:42:5)

Update 1

Sometimes, there is no error, just timeouts from all tests…

Update 2

I just received a bit more detailed stacktrace:

MongoError: not master
    at MessageStream.messageHandler (/Users/mateuszlewandowski/Projects/konsalnet/konsalnet/scheduling-api/node_modules/mongodb/lib/cmap/connection.js:268:20)
    at MessageStream.emit (events.js:400:28)
    at MessageStream.emit (domain.js:470:12)
    at processIncomingData (/Users/mateuszlewandowski/Projects/konsalnet/konsalnet/scheduling-api/node_modules/mongodb/lib/cmap/message_stream.js:144:12)
    at MessageStream._write (/Users/mateuszlewandowski/Projects/konsalnet/konsalnet/scheduling-api/node_modules/mongodb/lib/cmap/message_stream.js:42:5)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at MessageStream.Writable.write (internal/streams/writable.js:303:10)
    at Socket.ondata (internal/streams/readable.js:726:22)
    at Socket.emit (events.js:400:28)
    at Socket.emit (domain.js:470:12)
    at addChunk (internal/streams/readable.js:290:12)
    at readableAddChunk (internal/streams/readable.js:265:9)
    at Socket.Readable.push (internal/streams/readable.js:204:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:188:23)

Code Example

Setup code

let mongoServer;
export async function setupTestDatabase() {
  mongoServer = await MongoMemoryReplSet.create({ replSet: { count: 3, storageEngine: "wiredTiger" } });
  await mongoServer.waitUntilRunning();
  const mongoUri = mongoServer.getUri();
  await connect(mongoUri, "test-db"); // <- creates mongo client and connects to database, client is then imported in other files
}

export async function tearDownTestDatabase() {
  await disconnect(); // <- disconnects application from mongo
  await mongoServer?.stop();
}

and in each test file I have

beforeAll(() => setupTestDatabase());
afterAll(() => tearDownTestDatabase());

[hasezoey]

i did not get a response yet for https://github.com/nodkz/mongodb-memory-server/issues/535#issuecomment-907793148, but a small update: version 8.0.0 released yesterday, which upgraded mongod (driver) and default mongodb binary versions, could you maybe try that?

See Migrate 8

[github-actions[bot]]

Closing Issue because it is marked as stale