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test: deflake child-process-pipe-dataflow #40838

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test: deflake child-process-pipe-dataflow #40838

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lpinca
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@lpinca lpinca commented Nov 17, 2021

Fixes: #25988

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Any idea why it suddenly started to fail?

@targos targos added the request-ci Add this label to start a Jenkins CI on a PR. label Nov 17, 2021
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lpinca commented Nov 17, 2021

I don't know. Could it be a different version of Git Bash?

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targos commented Nov 17, 2021

@nodejs/build-infra were the Windows hosts updated recently?

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CI: https://ci.nodejs.org/job/node-test-pull-request/40942/

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targos commented Nov 17, 2021

There's a linter error.

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lpinca commented Nov 17, 2021 via email •
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test/parallel/test-child-process-pipe-dataflow.js
@@ -27,7 +27,7 @@ const MB = KB * KB;
// So cut the buffer into lines at some points, forcing
// data flow to be split in the stream.
for (let i = 1; i < KB; i++)
buf.write(os.EOL, i * KB);
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What is the value of os.EOL? For windows I expecte it to be \r\n and wonder why cutting it down to just \n allows the test to pass.

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@lpinca lpinca Nov 17, 2021 •
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If you look at the error message here: https://ci.nodejs.org/job/node-test-binary-windows-js-suites/12290/RUN_SUBSET=3,nodes=win2012r2-COMPILED_BY-vs2019-x86/testReport/junit/(root)/test/parallel_test_child_process_pipe_dataflow/, you'll notice that the difference between the actual and the expected character count is 1023. That error can only happen if there is an additional (or missing) character per line, so I guess for some reason \r is not handled correctly.

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That would make sense if somewhere in the flow '\r\n' is getting converted to '\n'.

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@lpinca lpinca Nov 17, 2021 •
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I think it's the grep command not playing well with \r\n.

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I don't see any issues related to updating the Windows machines, but I'm not sure if they would update themselves @joaocgreis do you know.

Either way its worth getting the tests running again as long as this passes on all windows machines.

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I don't see any recent PRs that might have changed related behaviour in Node.js itself.

@lpinca lpinca force-pushed the deflake/test-child-process-pipe-dataflow branch from cfe7395 to 5739f62 Compare November 17, 2021 14:59
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I remember having problems with the non-Windows tools under Windows a while ago. Eventually, we might want to switch to binaries that are native to Windows and not provided by msys.

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LGTM with a suggestion

@lpinca lpinca force-pushed the deflake/test-child-process-pipe-dataflow branch from 5739f62 to b175af8 Compare November 17, 2021 16:06
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@targos targos added fast-track PRs that do not need to wait for 48 hours to land. request-ci Add this label to start a Jenkins CI on a PR. labels Nov 17, 2021
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targos commented Nov 17, 2021

Requesting fast-tracking because it fixes CI.

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@nodejs-github-bot nodejs-github-bot added needs-ci PRs that need a full CI run. test Issues and PRs related to the tests. labels Nov 17, 2021
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CI: https://ci.nodejs.org/job/node-test-pull-request/40948/

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CI: https://ci.nodejs.org/job/node-test-pull-request/40952/

@Trott Trott added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Nov 17, 2021
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Fast-track has been requested by @targos. Please 👍 to approve.

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Trott commented Nov 18, 2021

Landed in 0c2011c

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Trott pushed a commit that referenced this pull request Nov 18, 2021
@lpinca @Trott
test: deflake child-process-pipe-dataflow
0c2011c 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
@lpinca lpinca deleted the deflake/test-child-process-pipe-dataflow branch November 18, 2021 06:12
This was referenced Nov 19, 2021
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targos pushed a commit that referenced this pull request Nov 21, 2021
@lpinca @targos
test: deflake child-process-pipe-dataflow
896073b 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
This was referenced Nov 22, 2021
Open
Open
richardlau pushed a commit that referenced this pull request Nov 23, 2021
@lpinca @richardlau
test: deflake child-process-pipe-dataflow
7479447 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
richardlau pushed a commit that referenced this pull request Nov 23, 2021
@lpinca @richardlau
test: deflake child-process-pipe-dataflow
0682370 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
richardlau pushed a commit that referenced this pull request Nov 25, 2021
@lpinca @richardlau
test: deflake child-process-pipe-dataflow
704989b 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
@richardlau richardlau mentioned this pull request Nov 25, 2021
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@targos targos mentioned this pull request Nov 26, 2021
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BethGriggs pushed a commit that referenced this pull request Nov 29, 2021
@lpinca @BethGriggs
test: deflake child-process-pipe-dataflow
01ffe03 
Fixes: #25988

PR-URL: #40838
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
@BethGriggs BethGriggs mentioned this pull request Nov 30, 2021
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@richardlau richardlau mentioned this pull request Dec 13, 2021
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flaky: test-child-process-pipe-dataflow
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