logger.debug("Failed to create {} index.", index);
            }
        }

        final GetMappingsResponse getMappingsResponse = fesenClient.get(c -> c.admin().indices().prepareGetMappings(index).execute());
        final Map<String, MappingMetadata> indexMappings = getMappingsResponse.mappings();
        if (indexMappings == null || !indexMappings.containsKey("properties")) {