Investigate flaky test-http2-large-file

[jasnell]

The brand new just added test-http2-large-file appears to be flaky on Windows.

16:52:01 not ok 574 sequential/test-http2-large-file
16:52:01   ---
16:52:01   duration_ms: 2.908
16:52:01   severity: fail
16:52:01   exitcode: 1
16:52:01   stack: |-
16:52:01     (node:6524) ExperimentalWarning: The http2 module is an experimental API.
16:52:01     events.js:167
16:52:01           throw er; // Unhandled 'error' event
16:52:01           ^
16:52:01     
16:52:01     Error: read ECONNRESET
16:52:01         at TCP.onread (net.js:661:25)
16:52:01     Emitted 'error' event at:
16:52:01         at emitErrorNT (internal/streams/destroy.js:82:8)
16:52:01         at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
16:52:01         at process._tickCallback (internal/process/next_tick.js:63:19)
16:52:01   ...

[joyeecheung]

I can only find one instance of this in the last 100 CI runs

Reason     sequential/test-http2-large-file
Type       JS_TEST_FAILURE
Failed PR  1 (#22269)
Appeared   test-rackspace-win2008r2-x64-3
Last CI    https://ci.nodejs.org/job/node-test-pull-request/16450/

[joyeecheung]

By the way I think I've seen this on my local Windows machine before..

[jasnell]

Yep, it's flaky but only extremely rarely.

[refack]

Spotted: https://ci.nodejs.org/job/node-test-binary-windows/19269/COMPILED_BY=vs2017,RUNNER=win2008r2-vs2017,RUN_SUBSET=3/console

Stress test: https://ci.nodejs.org/job/node-stress-single-test/1992/

[refack]

Flaky:

1000   OK: 947   NOT OK: 53   TOTAL: 1000

[Trott]

https://ci.nodejs.org/job/node-test-binary-windows/19625/COMPILED_BY=vs2017,RUNNER=win2008r2-vs2017,RUN_SUBSET=2/console

03:45:21 not ok 578 sequential/test-http2-large-file
03:45:21   ---
03:45:21   duration_ms: 2.109
03:45:21   severity: fail
03:45:21   exitcode: 1
03:45:21   stack: |-
03:45:21     events.js:167
03:45:21           throw er; // Unhandled 'error' event
03:45:21           ^
03:45:21     
03:45:21     Error: read ECONNRESET
03:45:21         at TCP.onread (net.js:661:25)
03:45:21     Emitted 'error' event at:
03:45:21         at emitErrorNT (internal/streams/destroy.js:82:8)
03:45:21         at emitErrorAndCloseNT (internal/streams/destroy.js:50:3)
03:45:21         at process._tickCallback (internal/process/next_tick.js:63:19)
03:45:21   ...