How to handle the error `fail to initial unit Sync of subtask` when DM is starting a task, with the `RawCause` in the error message showing `context deadline exceeded`?

system · January 30, 2023, 11:17am

This is a known issue in DM 2.0.0 version and will be fixed in DM 2.0.1 version. It is likely to be triggered when a replication task has a lot of tables to process. If you use TiUP to deploy DM, you can upgrade DM to the nightly version to fix this issue. Or you can download the 2.0.0-hotfix version from the release page of DM on GitHub and manually replace the executable files.