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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # ignore_above(忽略超越限制的字段) 字符串長度超過?**ignore_above**?設置的不會被索引和存儲. | `curl -XPUT?``'localhost:9200/my_index?pretty'`?`-H?``'Content-Type: application/json'`?`-d'` `{` `"mappings"``: {` `"my_type"``: {` `"properties"``: {` `"message"``: {` `"type"``:?``"keyword"``,` `"ignore_above"``:?``20`??`#?``1` `}` `}` `}` `}` `}` `'` `curl -XPUT?``'localhost:9200/my_index/my_type/1?pretty'`?`-H?``'Content-Type:? application/json'`?`-d' #?``2` `{` `"message"``:?``"Syntax error"` `}` `'` `curl -XPUT?``'localhost:9200/my_index/my_type/2?pretty'`?`-H?``'Content-Type:? application/json'`?`-d' #?``3` `{` `"message"``:?``"Syntax error with some long stacktrace"` `}` `'` `curl -XGET?``'localhost:9200/_search?pretty'`?`-H?``'Content-Type: application/json'`?`-d' #?``4` `{` `"aggs"``: {` `"messages"``: {` `"terms"``: {` `"field"``:?``"message"` `}` `}` `}` `}` | | 1 | 字段會忽略超過20個字符的字符串. | | 2 | 這個?**document**?成功被索引. | | 3 | 這個?**document**?會被索引,但是不會索引?**message**?字段. | | 4 | 搜索返回兩個文檔,但只有第一個存在于?**terms**(詞條)聚合中. | tip **ignore_above?**設置允許在相同索引的相同名稱的字段有不同的配置,可以使用?[PUT mapping API](https://www.elastic.co/guide/en/elasticsearch/reference/5.3/indices-put-mapping.html "Put Mapping")?在現有字段上更新其值。 此選項對于防止Lucene term(詞條)長度超過32766是有用的. **ignore_above?**的值是字符數,但?**Lucene?**計數的是字節。所以如果你使用具有許多非ASCII字符的UTF-8文本,則可能需要將限制設置為?**32766/3 = 10922**,因為UTF-8字符可能占用至多3個字節。
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                              哎呀哎呀视频在线观看