public ResultSet getUnsortedResultSet(boolean reverse) {
    return new SortedResultSetImpl(null, reverse);
  }
Get a result set that is not sorted. The result set will be overflowed on to disk as necessary,
but it will not be recovered from disk.

This is useful for cases where the ordering is not important, but the set semantics are. For
example, a distinct query.

@param reverse - true to reverse the natural order of the keys
geode-core/src/main/java/org/apache/geode/internal/cache/persistence/query/TemporaryResultSetFactory.java