elasticsearch新改变

 

第一种：

{
    "query" : {
        "filtered" : {
            "filter" : {
                "range" : {
                    "age" : { "gt" : 30 } 
                }
            },
            "query" : {
                "match" : {
                    "last_name" : "smith" 
                }
            }
        }
    }
}

在使用filtered的时候报错：

{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "no [query] registered for [filtered]",
        "line": 3,
        "col": 22
      }
    ],
    "type": "parsing_exception",
    "reason": "no [query] registered for [filtered]",
    "line": 3,
    "col": 22
  },
  "status": 400
}

　　原因：过时，替换成：

{
    "query" : {
        "bool" : {
            "filter" : {
                "range" : {
                    "age" : { "gt" : 30 }
                }
            },
            "must" : {
                "match" : {
                    "last_name" : "smith"
                }
            }
        }
    }
}

 

第二种：

Fielddata is disabled on text fields by default. Set fielddata=true on [interests] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead."

具体的原因是聚合前需要大量的内存，聚合前，需要将相应的字段开启聚合：

所以：

PUT megacorp/_mapping/employee/
{
  "properties": {
    "interests": { 
      "type":     "text",
      "fielddata": true
    }
  }
}

然后在进行查询：

GET /megacorp/employee/_search
{
    "aggs" : {
        "all_interests" : {
            "terms" : { "field" : "interests" },
            "aggs" : {
                "avg_age" : {
                    "avg" : { "field" : "age" }
                }
            }
        }
    }
}