I am currently using tGoogleAnalyticsInput component to get the views on our webpages from 12 different countries (Different profile ids) with one service account . 10 out 12 countries always succeed and provide data but 2 of them consistently fail giving the error "com.google.api.client.googleapis.json.GoogleJsonResponseException: 502 Bad Gateway".
I am using TOS 6.2.0 and the tGoogleAnalyticsInput component release 8.3.
The tGoogleAnalyticsInput component is written by talend community user and shared on talend exchange portal. Feel free to contact the author directly.