Parsed test spec with 2 sessions starting permutation: w1_fail w2_fail w1_check step w1_fail: SELECT ulak.update_circuit_breaker( (SELECT id FROM ulak.endpoints WHERE name = 'iso_cb_ep'), false ); update_circuit_breaker ---------------------- (1 row) step w2_fail: SELECT ulak.update_circuit_breaker( (SELECT id FROM ulak.endpoints WHERE name = 'iso_cb_ep'), false ); update_circuit_breaker ---------------------- (1 row) step w1_check: SELECT circuit_state, circuit_failure_count FROM ulak.endpoints WHERE name = 'iso_cb_ep'; circuit_state|circuit_failure_count -------------+--------------------- closed | 2 (1 row) starting permutation: w1_fail w2_fail w2_check step w1_fail: SELECT ulak.update_circuit_breaker( (SELECT id FROM ulak.endpoints WHERE name = 'iso_cb_ep'), false ); update_circuit_breaker ---------------------- (1 row) step w2_fail: SELECT ulak.update_circuit_breaker( (SELECT id FROM ulak.endpoints WHERE name = 'iso_cb_ep'), false ); update_circuit_breaker ---------------------- (1 row) step w2_check: SELECT circuit_state, circuit_failure_count FROM ulak.endpoints WHERE name = 'iso_cb_ep'; circuit_state|circuit_failure_count -------------+--------------------- closed | 2 (1 row)