[tune] Clean up temporary checkpoint directories for class trainables (ex: RLlib) #44366
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Why are these changes needed?
Class
Trainable
s currently create a temporary directory and provides it as the argument to the user-definedsave_checkpoint
. The temporary checkpoint directory gets persisted to storage after the user code executes, but it never gets cleaned up after. This leads to a build-up of many checkpoint "staging" folders that need to be manually deleted. RLlib is affected due toAlgorithm
s being class trainables.This PR cleans up the checkpoint folders right after they've been copied to storage.
Related issue number
Closes #43092
Checks
git commit -s
) in this PR.scripts/format.sh
to lint the changes in this PR.method in Tune, I've added it in
doc/source/tune/api/
under thecorresponding
.rst
file.