315157973 commented on pull request #10190:
URL: https://github.com/apache/pulsar/pull/10190#issuecomment-822341543


   I tried to handle this situation in connectionOpen, but failed:
   1 The first time call hasMessageAvailable, it will get the last msg in 
broker, and then trigger seek lastMsgIdInBroker
   2 seek will trigger disconnect and reconnect, clearReceiverQueue() will be 
called when connectionOpen, and then startMessageId will be assigned to seekId 
(lastMsgIdInBroker)
   3 Then connection is disconnected again(For other unknown reasons), and the 
startMessageId subscribed at this time is lastMsgIdInBroker, and the broker 
will not return this message.
   
   Because the sub command does not have an inclusive option, it can only be 
read from the next item of startMessageId. And I can't set entryId or ledger 
-1, otherwise the client may read forward after multiple reconnections. Unless 
I change the proto, add the inclusive option.
   
   @codelipenghui 


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