List<KeyRange> orclause = Lists.newArrayListWithExpectedSize(orlen);
slots.add(orclause);
int maxSlotLength = 0;
for (int j=0; j<orlen; j++) {
KeyRange range = new KeyRange();
range.readFields(in);
if (range.getLowerRange().length > maxSlotLength) {
maxSlotLength = range.getLowerRange().length;
}
if (range.getUpperRange().length > maxSlotLength) {
maxSlotLength = range.getUpperRange().length;