presto-hive/src/main/java/io/prestosql/plugin/hive/InternalHiveSplit.java/InternalHiveSplit/increaseStart
class InternalHiveSplit:    public void increaseStart(long value)
    {
        start += value;
        if (start == currentBlock().getEnd()) {
            currentBlockIndex++;
            if (isDone()) {
                return;
            }
            verify(start == currentBlock().getStart());
        }
    }