elasticSearch 无法聚合

"message": """send alarm success, code:195, content:{"code":195,"ip":"172.16.92.22","desc":"[dmp-custom-api] reqId: [49d9869a3204c049] 查询async-hbase 异常 tableName: ronghui:model_score_month, rowKey: 8b5265e5b2697cdd53ef63d5842d923e, cost: 3000, msg: Timed out after 3000ms when joining Deferred@986394434(state=PENDING, result=null, callback=type get response -> cn.jiguang.data.common.HbaseHelper$$Lambda$37/1425567375@3c7c5179 -> passthrough -> wakeup thread ForkJoinPool.commonPool-worker-0, errback=passthrough -> passthrough -> cn.jiguang.data.common.HbaseHelper$$Lambda$38/1406343950@5683fbbf -> wakeup thread ForkJoinPool.commonPool-worker-0)"}"""

如上面的字段，"message"："""xxx""" 为什么值是三个双引号