First time to see "Databricks is experiencing heavy load" message. What does it mean really?

[397973]

Hi, 

I just went to run a Databricks pyspark notebook and saw this message:

This is a notebook I've run before but never saw this. Is it referring to my cluster? The Databricks infrastructure? 

My notebook ran normally, just wondering though. Google search didn't return anything. 

[-werners-]

never saw that message, but my guess it is not your cluster but the Databricks platform in your region.
status.databricks.com perhaps has some info.