DM precheck fail: `grpc: received message larger than max`

[lyzx2001]

What did you do?

Use dm on cloud to import

What did you expect to see?

precheck success

What did you see instead?

The precheck of DM task was failed by internal error.

error="grpc: received message larger than max (6069063 vs. 4194304)"

The returned message of grpc is too long and confusing to users.

Versions of the cluster

Cluster version:

v7.5.0

current status of DM cluster (execute query-status <task-name> in dmctl)

(paste current status of DM cluster here)

[fubinzh]

/severity major