【TiDB 使用环境】生产环境
【TiDB 版本】7.5.3
【操作系统】Centos7.9
【问题复现路径】主从集群通过CDC同步，大量用insert into A select * from B分批向主库写入数据。CDC时间checkpoint_time不前进
【遇到的问题：问题现象及影响】
背景: 主从集群通过CDC同步，大量用insert into A select * from B分批向主库写入数据
现象: 发现CDC同步运行一段时间后，heckpoint_time不前进
状态：
cdc cli changefeed query -s -c atpub-risk --pd=http://10.xx.xx:2379
{
“upstream_id”: 7413805780023922501,
“namespace”: “default”,
“id”: “atpub-risk”,
“state”: “normal”,
“checkpoint_tso”: 456638371224879472,
“checkpoint_time”: “2025-03-14 15:25:46.091”,
“error”: null
}
日志：
[2025/03/14 17:15:30.007 +08:00] [WARN] [shared_client.go:787] [“event feed finds slow locked ranges”] [namespace=default] [changefeed=atpub-risk] [subscriptionID=648404] [ranges=“{"LockedRegionCount":387,"Holes":null,"FastestRegion":{"RegionID":368297460,"ResolvedTs":456640097063010408,"Initialized":true,"Created":"2025-03-14T15:08:24.151445887+08:00"},"SlowestRegion":{"RegionID":368293723,"ResolvedTs":456638286971797599,"Initialized":false,"Created":"2025-03-14T15:25:32.585415697+08:00"}}”]
问原因及如何解决： ？