c = new KeyValue.MetaComparator();
assertTrue(c.compare(bbb, aaa) < 0);
KeyValue aaaa = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,,1236023996656"),
Bytes.toBytes("info:regioninfo"), 1236024396271L);
assertTrue(c.compare(aaaa, bbb) < 0);
KeyValue x = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
Bytes.toBytes(""), 9223372036854775807L);
KeyValue y = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
Bytes.toBytes("info:regioninfo"), 1236034574912L);