if (iiter.hasPrevious())
prevKey = new Key(iiter.peekPrevious().getKey()); // initially prevKey is the last key of the prev block
else
prevKey = new Key(); // first block in the file, so set prev key to minimal key
IndexEntry indexEntry = iiter.next();
entriesLeft = indexEntry.getNumEntries();
currBlock = getDataBlock(indexEntry);
checkRange = range.afterEndKey(indexEntry.getKey());
if (!checkRange)
hasTop = true;
MutableByteSequence valbs = new MutableByteSequence(new byte[64], 0, 0);