airbnb / airflow / 1977

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travis-ci

Beware of negative pool slots.

Sometimes the scheduler over-allocates tasks in a pool. When that happens the

number of open slot counts will go negative. The `not open_slots` code only

works if the scheduler observes the pool going to zero. If it has gone negative

the previous logic will schedule an unlimited number of pool tasks.

2 of 2 new or added lines in 1 file covered. (100.0%)

5139 of 7668 relevant lines covered (67.02%)

3.32 hits per line