[GitHub] [pulsar] n3ziniuka5 commented on issue #12208: Consumers get stuck in Key_shard mode and delayed messages

[GitBox <gi...@apache.org>]

n3ziniuka5 commented on issue #12208:
URL: https://github.com/apache/pulsar/issues/12208#issuecomment-930182966


   We are facing the same issue at the moment. I think at a minimum, the docs could be a bit more clear. Here is what they currently say:
   
   > Delayed message delivery only works in Shared subscription mode. In Exclusive and Failover subscription modes, the delayed message is dispatched immediately.
   
   Exclusive and Failover modes are explicitly mentioned, but nothing says that KeyShared subscriptions will be stuck, which is quite an important detail.
   
   But it would be nice if it was impossible to encounter this problem in the first place. Since delayed messages do have some caveats, one way to address this would be to require them to be explicitly enabled for a topic. Once this feature is enabled you would not be able to create unsupported subscription types on that topic. Without the feature enabled all delayed messages would be rejected.


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