codelipenghui opened a new pull request #8274:
URL: https://github.com/apache/pulsar/pull/8274
### Motivation
To troubleshooting the consumer stop to receive messages under the
key_shared subscription, it's difficult to know if the broker stops to dispatch
messages to this consumer to preserve order. So this PR exposes a metrics to
show the read position when the consumer joining so that we can compare the
read position and the mark delete position to determine.
### Verifying this change
Unit test added
### Does this pull request potentially affect one of the following parts:
*If `yes` was chosen, please highlight the changes*
- Dependencies (does it add or upgrade a dependency): (no)
- The public API: (no)
- The schema: (no)
- The default values of configurations: (no)
- The wire protocol: (no)
- The rest endpoints: (no)
- The admin cli options: (no)
- Anything that affects deployment: (no)
### Documentation
- Does this pull request introduces a new feature? (no)
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