bazelbuild
Sandbox reuse preserves test`_tmp` directory
Description of the bug:
The _tmp directory created for tests is preserved in the sandbox stash.
While I haven't benchmarked the effect of this, it would at least waste disk space and may also negatively affect performance of sandbox reuse.
Which category does this issue belong to?
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What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.
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Which operating system are you running Bazel on?
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What is the output of bazel info release?
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If bazel info release returns development version or (@non-git), tell us how you built Bazel.
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What's the output of git remote get-url origin; git rev-parse HEAD ?
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Is this a regression? If yes, please try to identify the Bazel commit where the bug was introduced.
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Have you found anything relevant by searching the web?
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Any other information, logs, or outputs that you want to share?
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Hey Fabian, are you sure about this?
I see here that we are only stashing the execroot from the sandboxBase. The _hermetic_tmp directory is a sibling of the execroot.
The testing code I wrote to repro this isn't giving me any hermetic tmp directory being copied into the stash. Under sandboxBase/execroot/$TEST_WORKSPACE/, I do see a _tmp directory. It would be good not to copy that one too but it's not related to the hermetic tmp dir. Is that the one you meant? As far as I can see that would only be created for test rules though. Was this prompted by the test rules in rules_oci?
Thanks!
Thanks for investigating and sorry for the false alarm - I saw the _tmp and thought that it was the hermetic tmp dir.
Oh I can still fix the _tmp one. I think it makes total sense not to stash that in tests.