DangHT

I think that if only one tidb instance is started, only one line of log should be output, because the tiflash below it does this, but I see this: ```...

I tried to set env `TIUP_CLUSTER_PROGRESS_REFRESH_RATE` to `500ms` and the output `Waiting for tidb instances ready` did decrease, but the interesting thing is that the output `Waiting for tiflash instances...

I have the same problem as you. The problem was solved after trying to install all the jars to the local maven repository from [confluencinc/kafka](https://github.com/confluentinc/kafka#installing-all-the-jars-to-the-local-maven-repository)