fs.open() can keep the event loop open in some cases

[Trott]

• Version: 15.0.0-pre (master branch)
• Platform: Raspberry Pi 2 and Raspberry Pi 3
• Subsystem: fs

What steps will reproduce the bug?

See test-fs-open-no-close.js added to known_issues in #34228.

How often does it reproduce? Is there a required condition?

I strongly suspect the issue is that the filesystem is NFS-mounted.

What is the expected behavior?

The event loop should not be held open and the test should exit.

What do you see instead?

On the Raspberry Pi devices in CI, the test file times out because it never exits.

Additional information

[Trott]

@nodejs/fs

[ronkorving]

The event loop should be held open and the test should exit.

"should not be held open" I assume?

[Trott]

The event loop should be held open and the test should exit.

"should not be held open" I assume?

Yes, indeed. Fixed. Thanks!

[Trott]

@bnoordhuis Are you still interested in investigating this? (Ref: #34228 (review)) And if so, do you need help getting set up with ssh access to one of the Raspberry Pi devices or is that already sorted out?

[bcoe]

This appears to have been addressed by #35566, I will keeping an eye on the next few builds to make sure it's not a still a flake.