RockteMQ-AI commented on issue #11041:
URL: https://github.com/apache/rocketmq/issues/11041#issuecomment-5556532266
**Issue Evaluation**
Category: `bug` | Status: **Confirmed**
Verified against `MQClientAPIImpl` pagination logic. The off-by-one error is
clear:
```java
if (topicSeq >= totalTopicNum - 1) { // line 3125
if (groupSeq >= totalGroupNum - 1) { // line 3033
```
When `N ≡ 1 (mod pageSize)` (e.g., 2001 topics with pageSize 2000), the loop
terminates after fetching `k*pageSize` entries, leaving exactly one entry
unfetched.
**Note:** A fix PR already exists —
[#11042](https://github.com/apache/rocketmq/pull/11042).
**Severity:** Medium — silent metadata truncation with no error or retry.
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