celery的rabbitmq的问题

Question

我用celery跑爬虫，跑了一段时间后发现，celery停止不动了，之后看日志发现，他在做这个

这个是什么问题呢，队列用的是rabbitmq。

backend和broken都是这个。并且，每次都在执行存入mongodb任务的时候出现这样的问题
就像这样

[2016-11-25 16:51:17,199: DEBUG/MainProcess] "GET http://shixin.court.gov.cn/findDetai?id=389373&pCode=3504 HTTP/1.1" 200 699
[2016-11-25 16:51:17,244: WARNING/MainProcess] {'updatedExisting': True, u'nModified': 1, u'ok': 1, u'n': 1}
[2016-11-25 16:51:39,287: DEBUG/MainProcess] "GET http://shixin.court.gov.cn/findDetai?id=389396&pCode=3504 HTTP/1.1" 200 612
[2016-11-25 16:51:39,338: WARNING/MainProcess] {'updatedExisting': True, u'nModified': 1, u'ok': 1, u'n': 1}
[2016-11-25 16:51:43,229: DEBUG/MainProcess] "GET http://shixin.court.gov.cn/findDetai?id=389217&pCode=1939 HTTP/1.1" 503 363
[2016-11-25 16:51:43,277: WARNING/MainProcess] {'updatedExisting': True, u'nModified': 1, u'ok': 1, u'n': 1}
[2016-11-25 16:51:52,362: DEBUG/MainProcess] heartbeat_tick : for connection 640279ea8d0f43a3adcc9d69e9707e86
[2016-11-25 16:51:52,362: DEBUG/MainProcess] heartbeat_tick : Prev sent/recv: 1400/4632, now - 1424/4713, monotonic - 112534.453313, last_heartbeat_sent - 112534.453306, heartbeat int. - 120.0 for connection 640279ea8d0f43a3adcc9d69e9707e86