https://github.com/rmehner/mongo-3.6.3-bug

Reproduable example of a bug (?) in the node mongodb client version 3.6.3
https://github.com/rmehner/mongo-3.6.3-bug

Last synced: 23 days ago
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Reproduable example of a bug (?) in the node mongodb client version 3.6.3

• Host: GitHub
• URL: https://github.com/rmehner/mongo-3.6.3-bug
• Owner: rmehner
• Created: 2021-01-24T19:09:51.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2021-01-25T09:30:51.000Z (almost 4 years ago)
• Last Synced: 2024-11-09T18:29:10.158Z (2 months ago)
• Language: JavaScript
• Size: 5.86 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Mongo Client 3.6.3 bug

🐛 https://jira.mongodb.org/browse/NODE-3052

## Requirements

* Node 12+

* npm

* Docker

## Steps to reproduce

1. Clone this repo

2. `npm install`

3. `docker-compose up`

4. `node index.js` (or `npm test`)

## Expected behaviour

No error and the message: If you see this, the connection was successful 🎉

## Actual behaviour

No output for a while, then:

```

UnhandledPromiseRejectionWarning: MongoServerSelectionError: Server selection timed out after 30000 ms

```

## Fixes

### Downgrade to 3.6.2

In `package.json`, change version of `mongodb` to `3.6.2`, run `npm install`.

Everything works as expected then.

### Don't use useUnifiedTopology

Change the connection call to:

```js

const client = new MongoClient("mongodb://localhost:27017");

```

This also works as expected then.