reader = FileOperations.getInstance().openReader(path, new Range(prevEndRow, false, null, true), LocalityGroupUtil.EMPTY_CF_SET, false, fs, conf,
acuconf);
while (reader.hasTop()) {
Key key = reader.getTopKey();
if (endRow != null && key.compareRow(endRow) > 0)
break;
else if (prevEndRow == null || key.compareRow(prevEndRow) > 0)
numKeys++;
reader.next();