b.Run(" X000|X000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 1, 1, size, b) })
	b.Run(" 0000|XXXX ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 0, 4, size, b) })
	b.Run(" XX00|XX00 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 2, 2, size, b) })
	b.Run(" XXXX|0000 ", func(b *testing.B) { benchmarkErasureDecode(4, 4, 4, 0, size, b) })
}

func BenchmarkErasureDecode_12_30MB(b *testing.B) {

                    return new SampleElements<>(
                        mapEntry("x", 1),
                        mapEntry("xxx", 3),
                        mapEntry("xx", 2),
                        mapEntry("xxxx", 4),
                        mapEntry("aaaaa", 5));
                  }

                  @Override
                  public Map<String, Integer> create(Object... elements) {

    doTestAllMatches(CharMatcher.any(), "blah");
    doTestAllMatches(isNot('a'), "bcde");
    doTestAllMatches(is('a'), "aaaa");
    doTestAllMatches(noneOf("CharMatcher"), "zxqy");
    doTestAllMatches(anyOf("x"), "xxxx");
    doTestAllMatches(anyOf("xy"), "xyyx");
    doTestAllMatches(anyOf("CharMatcher"), "ChMa");
    doTestAllMatches(inRange('m', 'p'), "mom");
    doTestAllMatches(forPredicate(Predicates.equalTo('c')), "ccc");

```sh
# delete the index
curl -XDELETE localhost:9200/test

# insert a document
curl -XPUT localhost:9200/test/test/1 -d '{
 "title": "test document"
}'

# this should return XXXX but instead returns YYY
curl ....
```