I have created a documet with many fields, some of them are lists of Strings as follows:
@Field(type = FieldType.Nested)
private Set<String> locationList = new HashSet<>();
but when I try to save this document, i get this error:
2022-12-23 14:20:43.049 ERROR 182080 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path threw exception [Request processing failed; nested exception is org.springframework.data.elasticsearch.UncategorizedElasticsearchException: Elasticsearch exception [type=mapper_parsing_exception, reason=object mapping for [locationList] tried to parse field [null] as object, but found a concrete value]; nested exception is ElasticsearchStatusException[Elasticsearch exception [type=mapper_parsing_exception, reason=object mapping for [locationList] tried to parse field [null] as object, but found a concrete value]]] with root cause org.elasticsearch.ElasticsearchStatusException: Elasticsearch exception [type=mapper_parsing_exception, reason=object mapping for [locationList] tried to parse field [null] as object, but found a concrete value]
I tried to change all these fields to Text like this:
@Field(type = FieldType.Text)
private Set<String> locationList = new HashSet<>();
there were no more errors after this, but the document was not saved in the index. Before that I even deleted the old index so that a new index with new mappings will be created.
does anyone knows what could be the problem? Thanks.