public void setSortableSortOrders(boolean[] sortableSortOrders) {
    this.sortableSortOrders = sortableSortOrders;
  }
This is kind of hacky. Currently we get BinarySortableSerDe-serialized keys; we could
re-serialize them into LazyBinarySerDe, but instead we just reuse the bytes. However, to
compare the large table keys correctly when we do, we need to serialize them with correct
ordering. Hence, remember the ordering here; it is null if we do use LazyBinarySerDe.
ql/src/java/org/apache/hadoop/hive/ql/exec/persistence/MapJoinBytesTableContainer.java