I have downloaded and imported HDP_Docker_Sandbox on VM, but soon after starting it, it got stuck at "Started cleanup of temporary directories". However, there are no errors coming, but the loading is not progressing. The Ambari view at port 8080 is running but ssh at port 4200 is not available. I have attached screenshots for quick references.
What i see is... sometimes me too get the message and sandbox seems to be stuck there, But actually all it's functionality works well because most of its services like ssh and other are started till that point.
"Started cleanup of temporary directories"
So you can continue to work with Ambari and other services .. even if the sandbox seems to be stuck. Sometimes it happens due to lack of resources (like RAM). So i keep the unwanted services in Maintenance Mode (stopped + Maintenance Mode) .