Elasticsearch和MongoDB，部分搜索不起作用

Question

這是我在mongodb中的位置集合：

{ "_id" : ObjectId("5270d36f28f31fd8fa016441"), "stateName" : "A5", "cityName" : "ABCNEW2" }
{ "_id" : ObjectId("5270d37328f31fd8fa016442"), "stateName" : "A5", "cityName" : "ABC" }
{ "_id" : ObjectId("5270d37b28f31fd8fa016443"), "stateName" : "65", "cityName" : "ABCRW" }

我使用彈性搜索創建了一個索引：

POST /bwitter
{"index": 
  { "number_of_shards": 1,
    "analysis": {
       "filter": {
                  "mynGram" : {"type": "nGram", "min_gram": 2, "max_gram": 10}
                 },
       "analyzer": { "a1" : {
                    "type":"custom",
                    "tokenizer": "standard",
                    "filter": ["lowercase", "mynGram"]
                    }
                  } 
     }
  }
}

我使用彈性搜索創建了一個映射：

PUT /bwitter/bweet/_mapping
{
    "bweet" : {
        "index_analyzer" : "a1",
        "search_analyzer" : "standard", 
        "properties" : {
            "stateName": {"type":"string", "analyzer":"standard"},
            "cityName" : {"type" : "string" }
        }
    }

}

創建的河流如下：

PUT /_river/mongodb/_meta
{ 
    "type": "mongodb", 
    "mongodb": { 
        "db": "rakeshdb", 
        "collection": "locations"
    }, 
    "index": {
        "name": "locations", 
        "type": "bweet" 
    }
}

如果我查詢GET /locations/_search?q=ABC ，那么我只會得到一條記錄（ GET /locations/_search?q=ABC全字搜索，對於部分字未進行搜索）

我幾乎花了一整天的時間，但無法解決這個問題。 我要去哪里錯了？

Answer 1

我猜應該是：

PUT /_river/mongodb/_meta
{ 
    "type": "mongodb", 
    "mongodb": { 
        "db": "rakeshdb", 
        "collection": "locations"
    }, 
    "index": {
        "name": "bwitter", 
        "type": "bweet" 
    }
}