记录：maxClauseCount is set to 1024

"root_cause": [
      {
        "type": "too_many_clauses",
        "reason": "too_many_clauses: maxClauseCount is set to 1024"
      }
]

POST sphinx-diseasedoctor/_search
{
  "from": 0,
  "size": 10,
  "query": {
    "bool": {
      "must": [
        {
          "match_phrase": {
            "diseasename": {
              "query": "狼疮性肾炎",
              "slop": 0,
              "zero_terms_query": "NONE",
              "boost": 3
            }
          }
        }
      ],
      "adjust_pure_negative": true,
      "boost": 1
    }
  },
  "sort": [
    {
      "_score": {
        "order": "desc"
      }
    }
  ]
}

方案一：当超过1024时可以将一个bool查询拆成两个子bool查询，使用must关键字，使得两个子bool查询是与的关系
方案二：编辑elasticsearch.yml，添加如下配置
    index.query.bool.max_clause_count: 10240
    注意：必须在最前面添加一个空格，即和其他配置首字母对齐，不然es启动报错。
方案三：由于索引分词使用了同义词，可以将查询分词和索引分词分开，单独设置查询分词
{
  "from": 0,
  "size": 10,
  "query": {
    "bool": {
      "must": [
        {
          "match_phrase": {
            "diseasename": {
              "query": "狼疮性肾炎",
              "slop": 0,
              "analyzer": "query_ansj", 
              "zero_terms_query": "NONE",
              "boost": 3
            }
          }
        }
      ],
      "adjust_pure_negative": true,
      "boost": 1
    }
  },
  "sort": [
    {
      "_score": {
        "order": "desc"
      }
    }
  ]
}