AIX: Intermittent failure on pseudo-tty/test-tty-wrap

[mhdawson]

• Version: master and 4.x
• Platform: AIX
• Subsystem: pseudo-tty

Seen a few intermittent failures in the pseudo-tty/test-tty-wrap test today

https://ci.nodejs.org/job/node-test-commit-aix/1998/nodes=aix61-ppc64/
https://ci.nodejs.org/job/node-test-commit-aix/1988/nodes=aix61-ppc64/

length differs.
expect=2
actual=0
patterns:
pattern = ^hello\ world\ 1$
pattern = ^hello\ world\ 2$
outlines:
not ok 1242 pseudo-tty/test-tty-wrap
  ---
  duration_ms: 0.150
  severity: fail
  stack: |-
  ...

[mhdawson]

stress run - https://ci.nodejs.org/job/node-stress-single-test/nodes=aix61-ppc64/1067/

[Trott]

/cc @Fishrock123

[Fishrock123]

I am very confused. What? How?

[Fishrock123]

Oh I see, no output is produced? Oh dear.

I guess you've triggered the exit bug with load alone?? ¯\_(ツ)_/¯

[gibfahn]

cc/ @nodejs/platform-aix @Akpotohwo

[mhdawson]

Passed 200 runs in stress build.

[Akpotohwo]

Failed 24 times in 3100 on one of our aix machines... It's the same failure as shown earlier.

[mhdawson]

Good to hear you can recreate.

[mhdawson]

Failed again in the build today. https://ci.nodejs.org/job/node-test-commit-aix/nodes=aix61-ppc64/2433/

@Akpotohwo any update on the investigation ?

[mhdawson]

Failed again https://ci.nodejs.org/job/node-test-commit-aix/nodes=aix61-ppc64/2566/console

[Trott]

Again today:

https://ci.nodejs.org/job/node-test-commit-aix/2736/nodes=aix61-ppc64/console:

length differs.
expect=2
actual=0
patterns:
pattern = ^hello\ world\ 1$
pattern = ^hello\ world\ 2$
outlines:
not ok 1288 pseudo-tty/test-tty-wrap
  ---
  duration_ms: 0.158
  severity: fail
  stack: |-

[Trott]

I guess you've triggered the exit bug with load alone?? ¯_(ツ)_/¯

@Fishrock123 (or anyone else that knows): Can you elaborate a bit on "the exit bug"? Is there a link or something?