presto-main/src/main/java/io/prestosql/operator/AssignUniqueIdOperator.java/AssignUniqueIdOperator/requestValues
class AssignUniqueIdOperator:    private void requestValues()
    {
        rowIdCounter = rowIdPool.getAndAdd(ROW_IDS_PER_REQUEST);
        maxRowIdCounterValue = Math.min(rowIdCounter + ROW_IDS_PER_REQUEST, MAX_ROW_ID);
        checkState(rowIdCounter < MAX_ROW_ID, "Unique row id exceeds a limit: %s", MAX_ROW_ID);
    }