final FieldMappers indexName = mapperService.indexName(field);
if (indexName == null) {
logger.warn("no index mapper found for field: [{}] returning default postings format", field);
return defaultPostingFormat;
}
PostingsFormatProvider postingsFormat = indexName.mapper().postingsFormatProvider();
return postingsFormat != null ? postingsFormat.get() : defaultPostingFormat;
}
@Override
public DocValuesFormat getDocValuesFormatForField(String field) {