mattisonchao opened a new pull request, #25395:
URL: https://github.com/apache/pulsar/pull/25395
## Motivation
Pulsar has broker-side controls for rate limiting, delayed delivery, and
unacked message blocking — but no simple admin command to say "stop delivering
to this subscription right now."
This PIP proposes adding `pause` and `resume` admin API endpoints for
subscription dispatching, allowing operators to immediately halt message
delivery without disconnecting consumers, losing cursor position, or
coordinating across client instances.
## Changes
- Adds `pip/pip-459.md`
## Key Design Points
- Two new REST endpoints: `PUT .../subscription/{subName}/dispatching/pause`
and `.../resume`
- Paused state persisted as cursor property (`__paused`), survives broker
restarts
- Connected consumers remain attached but receive no new messages
- No protocol changes, no new configuration
See [pip-459.md](pip/pip-459.md) for the full proposal.
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