.startObject("_timestamp").field("enabled", randomBoolean()).startObject("fielddata").field("loading", "lazy").field("format", "doc_values").endObject().field("store", "yes").endObject()
.endObject().endObject().string();
DocumentMapperParser parser = createIndex("test").mapperService().documentMapperParser();
DocumentMapper docMapper = parser.parse(mapping);
assertThat(docMapper.timestampFieldMapper().fieldDataType().getLoading(), equalTo(FieldMapper.Loading.LAZY));
assertThat(docMapper.timestampFieldMapper().fieldDataType().getFormat(docMapper.timestampFieldMapper().fieldDataType().getSettings()), equalTo("doc_values"));
mapping = XContentFactory.jsonBuilder().startObject().startObject("type")
.startObject("_timestamp").field("enabled", randomBoolean()).startObject("fielddata").field("loading", "eager").field("format", "array").endObject().field("store", "yes").endObject()
.endObject().endObject().string();