Blocking Minecraft.exe on Firewall causes Logging to loop indefinitely

Launcher logs connection errors indefinitely.
Tries to reconnect which fails, etc.
Causes launcher-app.log to take up a lot of space (~150MB in ~4 min)
Causes high CPU/memory usage.

Also as a note/question:
Why does minecraft.exe try to connect to google content servers?
The logging feature seems very intrusive to me. Not particularly the
information itself more the providers used and what it might be used for in the future.