Hi, The dead letter queue isn't expected to consume from it, but you could change the permission by `MQAdmin` and subscribe the DLQ topic manually if you want.
As for your another question `Why the new topic name is not "%DLQ%" + oldTopicName ?`, obviously, a topic may have many subscriptions and the DLQ is related to the consumer group, not the topic. Regards, yukon On Mon, Mar 26, 2018 at 12:05 PM, 那~ <3097904...@qq.com> wrote: > > Hey guys, > > Help us with one hand please! When you have some free time if you touch > <http://python.jobbole.com/88940/>... > I'm analysising a web page: > <http://blog.mrriddler.com/2017/02/10/%E8%AE%A1%E7%AE%97%E6%9C%BA%E4%BD%93%E7%B3%BB-%E7%BC%96%E8%AF%91%E4%BD%93%E7%B3%BB%E6%BC%AB%E6%B8%B8/#menu> > try your best to open the cover version of DLQ > <http://www.cnblogs.com/yuxc/archive/2012/02/09/2344474.html> messages > <http://blog.mrriddler.com/2017/02/10/%E8%AE%A1%E7%AE%97%E6%9C%BA%E4%BD%93%E7%B3%BB-%E7%BC%96%E8%AF%91%E4%BD%93%E7%B3%BB%E6%BC%AB%E6%B8%B8/#menu> > > > <http://blog.mrriddler.com/2017/02/10/%E8%AE%A1%E7%AE%97%E6%9C%BA%E4%BD%93%E7%B3%BB-%E7%BC%96%E8%AF%91%E4%BD%93%E7%B3%BB%E6%BC%AB%E6%B8%B8/#menu> > >>> > > Smile more often, then start a fresh new mind with re-thinking，:p) > > Thanks & best regards, > Sebastien. > > ------------------ 原始邮件 ------------------ > *发件人:* "张桂杰"<javen.zhang....@gmail.com>; > *发送时间:* 2018年3月24日(星期六) 晚上7:10 > *收件人:* "users"<users@rocketmq.apache.org>; > *主题:* How to get message from DLQ? > > Hi: > > My Question is about DLQ. > > We know that a message would be send to A DLQ if the consumer can not > handle the message for 1+ maxReConsumeTimes. So, How can I get the message > from the DLQ? > > I find that if the message is send to DLQ , A topic named > "%DLQ%+consumerGroup will be created with permission 'WRITE'(pem=2). (Why > the new topic name is not "%DLQ%" + oldTopicName ? ) > > When I try to subscribe a topic with the name above, I can not get any > message.After a debug, I found the reason is I have no read permission for > this special topic. > > > > btw: I started a namesrv and a master broker in my macbook. > >
