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fix(local-runner): force kill stuck workers after shutdown timeout#14997

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christian-bromann merged 3 commits intowebdriverio:mainfrom
mccmrunal:fix/worker-cleanup-force-kill
Jan 17, 2026
Merged

fix(local-runner): force kill stuck workers after shutdown timeout#14997
christian-bromann merged 3 commits intowebdriverio:mainfrom
mccmrunal:fix/worker-cleanup-force-kill

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Proposed changes

#14686
//: # (Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request. If it fixes a bug or resolves a feature request, be sure to link to that issue.)
Root Cause
When LocalRunner.shutdown() was called, it sent endSession commands to workers and waited up to 5 seconds for them to become non-busy. However, if a worker remained busy (e.g., a test timed out while running a polling loop), the process was never force-killed, allowing async operations to leak into subsequent tests
This PR fixes an issue where worker processes that don't shut down gracefully

Types of changes

  • Polish (an improvement for an existing feature)
  • Bugfix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Documentation update (improvements to the project's docs)
  • Specification changes (updates to WebDriver command specifications)
  • Internal updates (everything related to internal scripts, governance documentation and CI files)

Checklist

  • I have read the CONTRIBUTING doc
  • I have added tests that prove my fix is effective or that my feature works
  • I have added the necessary documentation (if appropriate)
  • I have added proper type definitions for new commands (if appropriate)

Backport Request

//: # (The current main branch is the development branch for WebdriverIO v9. If your change should be released to the current major version of WebdriverIO (v8), please raise another PR with the same changes against the v8 branch.)

  • This change is solely for v9 and doesn't need to be back-ported
  • Back-ported PR at #XXXXX

Further comments

Reviewers: @webdriverio/project-committers

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commit: 74c615a

PR webdriverio#14859 changed specFileRetries initialization to -1 (unknown) to
allow beforeSession hook to override it. The tests were not updated
and still expected the config values (2, 3).

This updates the test assertions to expect -1, matching the new
initialization behavior.
@mccmrunal mccmrunal closed this Jan 10, 2026
@mccmrunal mccmrunal reopened this Jan 10, 2026
@mccmrunal mccmrunal force-pushed the fix/worker-cleanup-force-kill branch from ae6bb27 to 74c615a Compare January 15, 2026 17:07
@mccmrunal mccmrunal closed this Jan 15, 2026
@mccmrunal mccmrunal reopened this Jan 15, 2026
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LGTM 👍

@christian-bromann christian-bromann merged commit 8580a31 into webdriverio:main Jan 17, 2026
85 of 95 checks passed
@christian-bromann christian-bromann added the PR: Bug Fix 🐛 PRs that contain bug fixes label Jan 17, 2026
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Hey mccmrunal 👋

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