presto-main/src/main/java/io/prestosql/execution/SqlTaskExecution.java/Status/incrementPendingCreation
class Status:        public synchronized void incrementPendingCreation(int pipelineId, Lifespan lifespan)
        {
            checkState(!per(pipelineId, lifespan).noMoreDriverRunner, "Cannot increment pendingCreation for Pipeline %s Lifespan %s. NoMoreSplits is set.", pipelineId, lifespan);
            per(pipelineId, lifespan).pendingCreation++;
            per(pipelineId).pendingCreation++;
        }