我已经将我的Elasticsearch集群从1.1升级到1.2，并且在索引一个较大的字符串时出现错误。

{
  "error": "IllegalArgumentException[Document contains at least one immense term in field=\"response_body\" (whose UTF8 encoding is longer than the max length 32766), all of which were skipped.  Please correct the analyzer to not produce such terms.  The prefix of the first immense term is: '[7b 22 58 48 49 5f 48 6f 74 65 6c 41 76 61 69 6c 52 53 22 3a 7b 22 6d 73 67 56 65 72 73 69]...']",
  "status": 500
}

索引的映射：

{
  "template": "partner_requests-*",
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 1
  },
  "mappings": {
    "request": {
      "properties": {
        "asn_id": { "index": "not_analyzed", "type": "string" },
        "search_id": { "index": "not_analyzed", "type": "string" },
        "partner": { "index": "not_analyzed", "type": "string" },
        "start": { "type": "date" },
        "duration": { "type": "float" },
        "request_method": { "index": "not_analyzed", "type": "string" },
        "request_url": { "index": "not_analyzed", "type": "string" },
        "request_body": { "index": "not_analyzed", "type": "string" },
        "response_status": { "type": "integer" },
        "response_body": { "index": "not_analyzed", "type": "string" }
      }
    }
  }
}

我搜索了文档，但没有找到与最大字段大小有关的任何内容。根据核心类型部分，我不明白为什么要为某个not_analyzed字段“校正分析仪” 。