升级到1.3.2后,为什么我的ElasticSearch查询出错？

Question

以前,我有这个:

{
  query: {
    function_score: {
      filter: {
        and: [
          {
            term: {
              'currency': 'usd',
              '_cache': false
            }
          }
        ]
      },
      script_score: {
        "script": "_score * doc['random_score'].value"
      }
    }
  }
}

非常基本,我只是按货币过滤并按分数排序.

但自从我升级后,我无法获得任何简单的自定义分数查询.

我试图用这个例子来简化它:

{
  query: {
    function_score: {
      script_score: {
        "script": "_score * doc['random_score'].value"
      }
    }
  }
}

我收到的错误如下:

{
  "error": "SearchPhaseExecutionException[Failed to execute phase [query], all shards failed; shardFailures {[PxzZtO8FQviuhxS-3EJFwA][listings][3]:
            SearchParseException[[listings][3]: from[-1],size[-1]:
              Parse Failure [Failed to parse source [
                {
                  "query": {
                    "function_score": {
                      "script_score": {
                        "script": "_score * doc['random_score'].value"
                      }
                    }
                  }
                }
              ]]];
            nested: QueryParsingException[[listings] script_score the script could not be loaded];
            nested: ScriptException[dynamic scripting for [mvel] disabled]; }{[PxzZtO8FQviuhxS-3EJFwA][listings][4]:
            SearchParseException[[listings][4]: from[-1],size[-1]:
              Parse Failure [Failed to parse source [
                {
                  "query": {
                    "function_score": {
                      "script_score": {
                        "script": "_score * doc['random_score'].value"
                      }
                    }
                  }
                }
              ]]];
            nested: QueryParsingException[[listings] script_score the script could not be loaded];
            nested: ScriptException[dynamic scripting for [mvel] disabled]; }{[PxzZtO8FQviuhxS-3EJFwA][listings][0]:
            SearchParseException[[listings][0]: from[-1],size[-1]:
              Parse Failure [Failed to parse source [
                {
                  "query": {
                    "function_score": {
                      "script_score": {
                        "script": "_score * doc['random_score'].value"
                      }
                    }
                  }
                }
              ]]];
            nested: QueryParsingException[[listings] script_score the script could not be loaded];
            nested: ScriptException[dynamic scripting for [mvel] disabled]; }{[PxzZtO8FQviuhxS-3EJFwA][listings][1]:
            SearchParseException[[listings][1]: from[-1],size[-1]:
              Parse Failure [Failed to parse source [
                {
                  "query": {
                    "function_score": {
                      "script_score": {
                        "script": "_score * doc['random_score'].value"
                      }
                    }
                  }
                }
              ]]];
            nested: QueryParsingException[[listings] script_score the script could not be loaded];
            nested: ScriptException[dynamic scripting for [mvel] disabled]; }{[PxzZtO8FQviuhxS-3EJFwA][listings][2]:
            SearchParseException[[listings][2]: from[-1],size[-1]:
              Parse Failure [Failed to parse source [
                {
                  "query": {
                    "function_score": {
                      "script_score": {
                        "script": "_score * doc['random_score'].value"
                      }
                    }
                  }
                }
              ]]];
            nested: QueryParsingException[[listings] script_score the script could not be loaded];
            nested: ScriptException[dynamic scripting for [mvel] disabled]; }]",
  "status": 400
}

像这样非常简单的东西,有效:

{
  query: {
    match_all: {}
  }
}

Answer 1

在以前的版本中,mvel是elasticsearch中的脚本,现在已经折旧了.

这是一个问题.https://github.com/elasticsearch/elasticsearch/issues/7029

实际问题是1.3.x中不支持mvel的动态脚本,但它也是1.3.x中的默认语言,将在1.4.x中更改,因此你必须包含lang参数,并赋值为,(lang =常规)

{
    query:{
        function_score:{
            script_score : {
                "script" : "_score * doc['random_score'].value",
                "lang":"groovy"
            }
        }
   }
} 

希望这可以帮助!!谢谢