aloyszhang opened a new issue #12265:
URL: https://github.com/apache/pulsar/issues/12265
**Describe the bug**
Expiry based on ttl setting is not working as expected. If a topic has a
ledge which has no entry, like
```shelll
"ledgers" : [ {
"ledgerId" : 330530,
"entries" : 8576709,
"size" : 1020628371,
"offloaded" : false
}, {
"ledgerId" : 330569,
"entries" : 8285012,
"size" : 985916428,
"offloaded" : false
}, {
"ledgerId" : 330610,
"entries" : 5634479,
"size" : 670503001,
"offloaded" : false
}, {
"ledgerId" : 1702011,
"entries" : 0,
"size" : 0,
"offloaded" : false
} ]
```
the expiry will move the `MarkDeletePosition` on entry each time
**To Reproduce**
Steps to reproduce the behavior:
1. Create a topic and a subscription on this topic
2. Producer some messages and subscribe part of these messages
3. Unload this topic (make sure this topic has a newest ledger which does
not contain any entry)
4. See the expiry
**Expected behavior**
TTL should be expected when checking message expiry.
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