presto-orc/src/main/java/io/prestosql/orc/reader/LongColumnReader.java/LongColumnReader/intReadNullBlock
class LongColumnReader:    private Block intReadNullBlock(boolean[] isNull, int nonNullCount)
            throws IOException
    {
        verifyNotNull(dataStream);
        int minNonNullValueSize = minNonNullValueSize(nonNullCount);
        if (intNonNullValueTemp.length < minNonNullValueSize) {
            intNonNullValueTemp = new int[minNonNullValueSize];
            systemMemoryContext.setBytes(sizeOf(intNonNullValueTemp));
        }

        dataStream.next(intNonNullValueTemp, nonNullCount);

        int[] result = unpackIntNulls(intNonNullValueTemp, isNull);

        return new IntArrayBlock(nextBatchSize, Optional.of(isNull), result);
    }