Fix global_cache_tracker::max_download_size test flakiness #13860
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Outdated suggestions cannot be applied.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 (hopefully) fixes an issue where the
global_cache_tracker::max_download_size
test was sporadically failing on CI. My theory is that thepopulate_cache
function was inconsistently saving entries with either the same timestamp or timestamps that differed by 1 second. The SQL query inget_registry_items_to_clean_size_both
sorts the results based on(timestamp,name)
. Thus if the timestamps were the same, it was sorting on name. If they differed, then the timestamp would dominate. The solution is to force the tests to use the same basis for the starting time so that a function call likedays_ago(1)
returns consistent results.I don't have a particularly good way to reproduce the issue. Adding a sleep into
populate_cache
causes 100% errors. Running on a slowed down system, or perhaps GitHub Actions might also reproduce, but I did not try.