[elasticsearch]sort no mapping found / ignore_unmapped

elasticsearch sort no mapping found

nested: SearchParseException[[index_name][2]: from[-1],size[-1]: Parse Failure [No mapping found for [name] in order to sort on]]; }]

在使用 sort ，若是沒有該 type 的 mapping ，預設的情況下會 return fail 。 這時候可以使用 ignore_unmapped 在 忽略 sort 該欄位時沒有存在 mapping的情況。

{
    "sort" : [
        { "price" : {"ignore_unmapped" : true} },
    ],
    "query" : {
        "term" : { "user" : "kimchy" }
    }
}

sorting - No mapping found for field in order to sort on in ElasticSearch - Stack Overflow
http://stackoverflow.com/questions/17051709/no-mapping-found-for-field-in-order-to-sort-on-in-elasticsearch
Sort ignoring_unmapped_fields http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-sort.html#_ignoring_unmapped_fields