89799969 opened a new pull request, #4323:
URL: https://github.com/apache/rocketmq-dashboard/pull/4323
Fixes #4168
## Problem
On the Producer page, switching the selected topic only resets
producer-group suggestions (`handleTopicChange`), while the connection table
and readiness banner keep showing the previous topic's results.
`handleInstanceChange` already clears `connectionList`/`connectionSummary`
for instance switches; the topic dimension was missed. Exporting from that
state relabels topic A's client connections as the newly selected topic B.
## Fix
On topic change:
- invalidate any in-flight connection query (`queryRequestIdRef` /
`queryInFlightRef`)
- clear `connectionList`, `connectionSummary`, and loading state
This matches the instance-switch path.
## Testing
- `Producer.test.tsx` (14 tests, including the new `clears stale connection
results when the topic changes`)
```
Test Files 1 passed (1)
Tests 14 passed (14)
```
Local run: Node 20, `npm test -- --run
src/pages/studio/__tests__/Producer.test.tsx`
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