readers.add(FileOperations.getInstance().openReader(file.path().toString(), false, ns, ns.getConf(), aconf.getConfiguration()));
}
List<IterInfo> emptyIterinfo = Collections.emptyList();
Map<String,Map<String,String>> emptySsio = Collections.emptyMap();
TableConfiguration tconf = aconf.getTableConfiguration(ke.getTableId().toString());
reader = createScanIterator(ke, readers, auths, new byte[] {}, new HashSet<Column>(), emptyIterinfo, emptySsio, useTableIterators, tconf);
HashSet<ByteSequence> columnSet = createColumnBSS(columns);
reader.seek(new Range(ke.getPrevEndRow(), false, ke.getEndRow(), true), columnSet, columnSet.size() == 0 ? false : true);