TiCDC synchronization error occurred

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

Original topic: ticdc同步出错了

| username: zhanggame1

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version] 7.5.0
[Reproduction Path] Operations performed that led to the issue
[Encountered Issue: Problem Phenomenon and Impact]

Error as follows:
“message”: "[CDC:ErrGCTTLExceeded]the checkpoint-ts(447065275173699606) lag of the changefeed(default/simple-replication-task) has exceeded the GC TTL and the changefeed is blocking global GC progression
Couldn’t find the specific reason

| username: 裤衩儿飞上天 | Original post link

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| username: 小龙虾爱大龙虾 | Original post link

Now you can only rebuild it, as it has exceeded the GC TTL. You should have checked the cause when the latency was high.

| username: dba远航 | Original post link

Try adjusting the TTL value of the GC.

| username: yulei7633 | Original post link

The checkpoint is gone. Recreate the task.

| username: system | Original post link

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