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cache locking allows bypassing herd avoidance #87

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kylegibson opened this issue Jun 25, 2020 · 0 comments
Open

cache locking allows bypassing herd avoidance #87

kylegibson opened this issue Jun 25, 2020 · 0 comments

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@kylegibson
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kylegibson commented Jun 25, 2020 •
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  1. two tasks (or more) enter apply_async at roughly the same time.
  2. cached result and herd avoidance checks pass for both
  3. both tasks hit the cache lock
  4. only 1 task is allowed in at a time, that task is scheduled
  5. the remaining tasks are still scheduled because they are after the herd avoidance check

https://github.com/PolicyStat/jobtastic/blob/master/jobtastic/task.py#L199
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