Mirror upstream elastic/elasticsearch#136781 for AI review (snapshot of HEAD tree) #249
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Some recent test performance updates flushed out test fragility due to non-thread safety and other concurrency issues with test setup, and so two optimizations were reverted. A recent PR at elastic#136780 added improved resiliency to concurrency issues in test setup which should allow us to bring back the performance optimizations.
The resiliency fix included in elastic#136780 was originally extracted from the Views PR at elastic#134995, which, due to early issues in view creation/deleting during test setup was reliably exposing the same errors seen in elastic#134736, and so it seems likely it will also fix the issues seen in the optimizations.
Checklist:
Fixes elastic#134890