elasticsearch - 如何在elasticsearch 2.3.0中删除字段？我用理性来查询

Question

我使用以下命令在文档中插入了新字段wiki_collection并将其值设置为true:

POST /pibtest1/_update_by_query
{
  "script": {
    "inline": "ctx._source.wiki_collection=true"
  },
  "query": {
    "match": {
      "url":"http%3A%2F%2Fwww.searchtechnologies.com%2Fbundles%2Fmodernizr%3Fv%3D7-yR01kdRVQ7W1RQzMBVKYLDhCt0itEATWHixfzE8Os1"
    }
  }
}

但是现在我要删除此字段。我正在尝试这样做:

POST /pibtest1/_update
{
    "script" : "ctx._source.remove(\"wiki_collection\")"
}

但我收到一条错误消息:

{
   "error": {
      "root_cause": [
         {
            "type": "invalid_type_name_exception",
            "reason": "Document mapping type name can't start with '_'"
         }
      ],
      "type": "invalid_type_name_exception",
      "reason": "Document mapping type name can't start with '_'"
   },
   "status": 400
}

还有其他方法可以在Elasticsearch中删除字段吗？

编辑:我已通过查询更新:

POST /pibtest1/_update_by_query
{
  "script": {
    "inline": "ctx._source.remove(\"wiki_collection\")"
  },
  "query": {
    "match": {
      "url": "http://www.searchtechnologies.com/bundles/modernizr?v=7-yR01kdRVQ7W1RQzMBVKYLDhCt0itEATWHixfzE8Os1"
    }
  }
}

但是现在我在文档中得到一个名为“remove ='wiki_collection'”的新文件，如下所示: http://i.stack.imgur.com/QvxIa.png
我想从我的文档中删除/删除此wiki_collection字段。

Answer 1

您的更新有误。它应该是(您指定完整路径-index / type / ID ):

POST /pibtest1/test/234/_update
{
  "script": {
    "inline": "ctx._source.remove(\"wiki_collection\")"
  }
}

或者您使用相同的 _update_by_query :

POST /pibtest1/_update_by_query
{
  "script": {
    "inline": "ctx._source.remove(\"wiki_collection\")"
  },
  "query": {
    "match": {
      "url": "whatever"
    }
  }
}