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@dprotaso dprotaso commented Nov 25, 2025

Fixes: #1509

My theory is that when this happens the go runtime will close
idle connections. If by chance the API server is making a
request and re-using a connection (that is closing) it will receive
an io.EOF. Thus introducing a flake.

So we now remove this setting change and let all the connections
close during the regular graceful shutdown. We would have
already lame ducked so the webhook shouldn't be receiving new
requests.

My theory is that when this happens the go runtime will close
idle connections. If by chance the API server is making a
request and re-using a connection (that is closing) it will receive
an io.EOF. Thus introducing a flake.

So we now remove this setting change and let all the connections
close during the regular graceful shutdown. We would have
already lame ducked so the webhook shouldn't be receiving new
requests.
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knative-prow bot commented Nov 25, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso

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@knative-prow knative-prow bot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Nov 25, 2025
@knative-prow knative-prow bot requested review from aslom and skonto November 25, 2025 21:39
@knative-prow knative-prow bot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Nov 25, 2025
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codecov bot commented Nov 25, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.58%. Comparing base (7d24e8d) to head (fa0f9a8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #3295      +/-   ##
==========================================
- Coverage   74.60%   74.58%   -0.03%     
==========================================
  Files         188      188              
  Lines        8188     8187       -1     
==========================================
- Hits         6109     6106       -3     
- Misses       1840     1841       +1     
- Partials      239      240       +1     

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@dprotaso dprotaso mentioned this pull request Nov 25, 2025
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/assign @nader-ziada @linkvt

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/lgtm

@knative-prow knative-prow bot added the lgtm Indicates that a PR is ready to be merged. label Nov 26, 2025
@knative-prow knative-prow bot merged commit 445f911 into knative:main Nov 26, 2025
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@dprotaso dprotaso deleted the webhook-eof branch November 26, 2025 02:14
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/cherry-pick release-1.20

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@dprotaso: new pull request created: #3305

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/cherry-pick release-1.20

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/cherry-pick release-1.19

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@dprotaso: new pull request created: #3306

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In response to this:

/cherry-pick release-1.19

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webhook EOF errors

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