Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.Original topic: cdc组件缩容以后,safe_point不往前推进

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version]
[Reproduction Path] What operations were performed when the issue occurred
[Encountered Issue: Issue Phenomenon and Impact]
[Resource Configuration] Enter TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots/Logs/Monitoring]
Initial Environment:
Two TiCDC nodes, configured with a task to synchronize to MySQL.
Operation:
Remove the CDC task.
Scale down the two CDC nodes.
Phenomenon:
service-gc-safepoint:
{
“service_id”: “ticdc-default-14681978075909900690”,
“expired_at”: 1704870439,
“safe_point”: 446898907036516360
}
The safe_point of CDC prevents GC from advancing. Normally, when there are no CDCs, the safe_point of CDC should be automatically cleaned up. Is there a way to manually clean it up, or do we have to wait for it to expire after a day?