Error: EMFILE, too many open files.

This error is appearing when I am uploading a directory that contains thousands of files around 4-5k+ files.

1. Is this a client library issue or a product issue?
   The issue is in the uploadDirectory sample.

2. Did someone already solve this?
   No

3. Do you have a support contract?
   No

Environment details

• OS: Google Cloud Run Container
• Node.js version: 14
• @google-cloud/storage version: 5.18.3

Steps to reproduce

1. Try to upload a directory with 5k+ file

Making sure to follow these steps will guarantee the quickest resolution possible.

Thanks!