A large number of "check point has no change" messages appear in the DM logs

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Original topic: dm日志出现大量check point has no change

| username: Jjjjayson_zeng

【TiDB Usage Environment】Production Environment
【TiDB Version】dm v5.4.0
【Reproduction Path】Operations performed that led to the issue
【Encountered Issue: Issue Phenomenon and Impact】
【Resource Configuration】
【Attachments: Screenshots/Logs/Monitoring】

efb88a5312886d9cfaf00b5bf0446a4
efb88a5312886d9cfaf00b5bf0446a41233×730 9.39 KB

Although it is an info type log, I don’t understand why such a large amount is generated.

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| username: xfworld | Original post link

Are there many changfeeds?

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| username: guominghao | Original post link

Known bug, fixed in v5.4.1.

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| username: CuteRay | Original post link

Bug, fixed in V5.4.1.
Additionally, you can refer to this post.
After upgrading to DM5.4, the worker prints a large number of logs: [syncer.go:1114] [“checkpoint has no change, skip sync flush checkpoint”] - :ringer_planet: TiDB Technical Issues / Backup & Data Migration - TiDB Q&A Community (asktug.com)

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| username: xingzhenxiang | Original post link

Known bug, fixed in v5.4.1, try upgrading.

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| username: Jjjjayson_zeng | Original post link

Not sure which version to upgrade to, the test environment was upgraded but the issue still persists
dm 5.4.2中的worker产生schema-trackerXXXXX文件夹很多 - TiDB 的问答社区…

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| username: Jjjjayson_zeng | Original post link

There is still a memory overflow issue after upgrading to 5.4.5. I am not sure which version is relatively stable, and I am hesitant to upgrade in the production environment.

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| username: system | Original post link

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