ElasticSearch报以下错误的解决办法：
"type": "es_rejected_execution_exception",
"reason": "rejected execution of org.elasticsearch.transport.TransportService$4@1f9512f on EsThreadPoolExecutor[search, queue capacity = 1000, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@c0efba[Running, pool size = 7, active threads = 7, queued tasks = 1000, completed tasks = 573995]]"
解决方案：
上面报错是因为queue capacity 不行了。需要增加产能：
