[Bug] When CK is in the buffer, incomplete ACK will lead to message duplication. #8835
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RongtongJin
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Oct 17, 2024
…essage duplication. (#8836) * add brokerName in ackMsg * add brokerName in ackMsg
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Before Creating the Bug Report
I found a bug, not just asking a question, which should be created in GitHub Discussions.
I have searched the GitHub Issues and GitHub Discussions of this repository and believe that this is not a duplicate.
I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ.
Runtime platform environment
ubuntu, java 11
RocketMQ version
latest
JDK Version
No response
Describe the Bug
When ck is in the buffer, incomplete ack will lead to message duplication.
Steps to Reproduce
pop N messages, then ACK N-1 messages quickly.
Ack the last message after the CK is put to store.
Then you will find the N-1 messages do "reviveRetry", leads to message duplication
What Did You Expect to See?
No messages are retried.
What Did You See Instead?
message duplication
Additional Context
No response
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