Why startup docker image take so long time

[#1]

Why the start of sandbox takes so much time? (on my MAC it is about 40 minutes and not run yet?)

[#2]

@Rafal Pronko

The current version of the HDP sandbox may hang during boot, but underneath the covers services may be up and running. Try opening a browser and navigating to http://localhost:8080 - if Ambari shows up that you're good to go - the start script is just hanging a bit. That'll be fixed in a very near-future release.

Another explanation is that your Docker wasn't allocated enough RAM. Did you do this step? https://hortonworks.com/tutorial/sandbox-deployment-and-install-guide/section/3/#for-mac