我试图用elasticsearch completion field suggester实现自动完成功能。
步骤1:创建测试索引：

curl --location --request PUT 'http://localhost:9200/test_index?pretty' \
--header 'Content-Type: application/json' \
--data-raw '{"settings": {"number_of_shards": 1, "max_ngram_diff": 7, "number_of_replicas": "0", "analysis": {"filter": {"edge_ngram_completion_filter": {"token_chars": ["whitespace", "digit"], "min_gram": "3", "type": "edge_ngram", "max_gram": "10"}}, "analyzer": {"edge_ngram_completion": {"filter": ["lowercase", "edge_ngram_completion_filter"], "type": "custom", "tokenizer": "standard"}}}}, "mappings": {"properties": {"id": {"type": "integer"}, "name": {"type": "text", "fields": {"raw": {"type": "keyword"}, "suggest": {"type": "completion", "analyzer": "edge_ngram_completion", "search_analyzer": "simple", "preserve_separators": true, "preserve_position_increments": true, "max_input_length": 100}}}}}}
'

步骤2：索引下列文档

curl --location --request POST 'http://localhost:9200/test_index/_doc?pretty' \
--header 'Content-Type: application/json' \
--data-raw '{
    "name": "PANTOCID DSR CAP",
    "id": 1
}'

第三步：点击analyze api for“pantocid dsr cap”，我得到[“pan”，“pant”，“panto”，“pantoc”，“pantoci”，“pantocid”，“dsr”，“cap”]标记

curl --location --request POST 'http://localhost:9200/test_index/_analyze?pretty' \
--header 'Content-Type: application/json' \
--data-raw '{
  "analyzer" : "edge_ngram_completion",
  "text" : "PANTOCID DSR CAP"  
}
'

第四步：但是当我用“dsr”搜索时，我没有得到任何建议：

curl --location --request POST 'http://localhost:9200/test_index/_search?pretty' \
--header 'Content-Type: application/json' \
--data-raw '{
  "suggest": {
    "egde_ngram_suggest" : {
       "text": "dsr", 
       "completion" : {
            "field" : "name.suggest"
       }
    }
  }
}
'

为什么？我的意思是，如果搜索的文本是生成的标记之一，那么它必须导致一个建议匹配，对吗？我是不是漏了什么？
感谢您的帮助。提前谢谢。