Bazel 8 hangs during build event upload #25232
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@bazel-io fork 8.1.0 |
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Users have reported hangs in Bazel's asynchronous remote cache uploads that may be happening because neither `onSuccess` nor `onError` is called on the observer. Work towards bazelbuild#25232 Closes bazelbuild#25231. PiperOrigin-RevId: 725235495 Change-Id: I20c3aaa2ee57a52041dea0b3c17356445f2bbc34
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… uploads (#25251) Users have reported hangs in Bazel's asynchronous remote cache uploads that may be happening because neither `onSuccess` nor `onError` is called on the observer. Work towards #25232 Closes #25231. PiperOrigin-RevId: 725235495 Change-Id: I20c3aaa2ee57a52041dea0b3c17356445f2bbc34 Commit d4c9b92 Co-authored-by: Fabian Meumertzheim <fabian@meumertzhe.im>
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A fix for this issue has been included in Bazel 8.1.0 RC4. Please test out the release candidate and report any issues as soon as possible. |
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@fmeum @westrik can you please check if Bazel 8.1.0 RC4 fixes the issue? Thanks |
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We (@tanium) were seeing frequent hangs with 8.0.1. Hangs seem to be resolved with 8.1.0 rc4. Thank you! |
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Fixed. See #25232 (comment) |
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Unfortunately I'm still seeing this with 8.1.0rc4 (with jstack dump: https://gist.github.com/westrik/9da3128bfac9d59ef781681b664d9267 |
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Possibly related: #25308 (comment) |
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@bazel-io fork 8.2.0 |
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Description of the bug:
I'm seeing an intermittent issue where a build will fail to exit after uploading build events. Seems like Bazel is waiting for background upload tasks even though they have all completed.
Which category does this issue belong to?
Core
What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.
This happens intermittently and I haven't found a straightforward repro.
Which operating system are you running Bazel on?
Amazon Linux 2023.6.20250115
What is the output of
bazel info release?release 8.0.1
If
bazel info releasereturnsdevelopment versionor(@non-git), tell us how you built Bazel.No response
What's the output of
git remote get-url origin; git rev-parse HEAD?If this is a regression, please try to identify the Bazel commit where the bug was introduced with bazelisk --bisect.
No response
Have you found anything relevant by searching the web?
Seems potentially related to #21626 but I'm not using remote execution.
Any other information, logs, or outputs that you want to share?
jstack dump
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