es 错误：EsRejectedExecutionException

• 错误详情

{
	"index": {
		"status": 429,
		"error": {
			"type": "es_rejected_execution_exception",
			"reason": "rejected execution of org.elasticsearch.transport.TransportService$7@637a429f on EsThreadPoolExecutor[name = i-ituvdmlo\\/bulk, queue capacity = 200, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@6666a774[Running, pool size = 4, active threads = 4, queued tasks = 200, completed tasks = 18696879]]"
		}
	}
}

• 原因：
  ES索引数据的速度已经跟不上client端发送bulk请求的速度，请求队列已满以致开始拒绝新的请求。

• 解决办法：
  打开 elasticsearch.yml 末尾加上

threadpool:
bulk:
type: fixed
size: 60
queue_size: 1000

重新启动服务

参考：https://blog.youkuaiyun.com/CenturyBole/article/details/80536488