CDC Task Creation Indicates Delay Exceeds One Day

This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: CDC创建任务提示延迟超过一天

| username: 孤君888

[TiDB Usage Environment] Production Environment / Testing / Poc
[TiDB Version]
[Reproduction Path] What operations were performed to cause the issue
[Encountered Issue: Issue Phenomenon and Impact]
Background: TIDB → MYSQL5.7
I used dumpling to perform a full database export around 5:30 PM yesterday, and then I imported the exported files into the downstream MYSQL5.7. Now, when I create a CDC task, it raises a warning. Should I ignore it?

[Resource Configuration]
[Attachments: Screenshots/Logs/Monitoring]

| username: 孤君888 | Original post link

I chose to ignore the risk, and the task was successfully created.

| username: tidb菜鸟一只 | Original post link

The prompt is very clear: if the replicate log exceeds 1 day, the data volume is large, which can easily lead to OOM. Monitor the CDC memory in the future.

| username: redgame | Original post link

Can be ignored.