Zhen Ye

/ci-rerun-ut-integration

/ci-rerun-ut-go

/ci-rerun-ut-go

/ci-rerun-ut-integration

/ci-rerun-code-check

/ci-rerun-ut-integration

/ci-rerun-ut-go

/ci-rerun-ut-integration

/assign @chyezh

Meanwhile, the tombstone kept of downstream is too less. we need more tombstone to avoid double acked. ``` 2025-11-18 11:14:49.063 [2025/11/18 03:14:49.063 +00:00] [INFO] [broadcaster/broadcast_task.go:425] ["save broadcast task done"] [module=streamingcoord]...