Improve datalad.support.tests.test_parallel.py::test_stalling
#7119
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR extends the time after which we believe to witness a stalling thread to at least 5 seconds. This time-span will only be exhausted if the test is failing, i.e. an executing worker is stalling (or very very slow). The duration of a passing test is usually in the range of a few dozen milliseconds.
The commit adds output processing in order to actually start of few runner-related threads and performs thread-based asynchronous data processing.
The large time limit will hopefully reduce the number of false positives greatly, though it cannot guarantee the absence of false positives, it just makes them unlikely, i.e. less than 1 false positive per 10e5 executions.