painless应用

目标

• 计算某个字段的长度，并且分割字符串，保存到数组

POST _reindex
{
   "source": {
     "index": "twiter"
   },
   "dest": {
     "index": "twiter1"
   },
   "script": {
     "source": "ctx._source.mlength = ctx._source['title'].length(); ctx._source.array = / /.split(ctx._source['title'])"
   }
}

开启painless正则匹配

script.painless.regex.enabled: true