presto-main/src/main/java/io/prestosql/execution/SqlTaskExecution.java/Status/setNoMoreDriverRunner
class Status:        public synchronized void setNoMoreDriverRunner(int pipelineId, Lifespan lifespan)
        {
            if (per(pipelineId, lifespan).noMoreDriverRunner) {
                return;
            }
            per(pipelineId, lifespan).noMoreDriverRunner = true;
            if (per(pipelineId, lifespan).pendingCreation == 0) {
                per(pipelineId).unacknowledgedLifespansWithNoMoreDrivers.add(lifespan);
            }
            per(pipelineId).lifespansWithNoMoreDriverRunners++;
            per(lifespan).pipelinesWithNoMoreDriverRunners++;
            checkLifespanCompletion(lifespan);
        }