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Is there a way to debug (specifically step-through) a Google app engine application that has been deployed to the cloud. The reason I am asking is that there are certain things that either cannot be debugged locally or require work-arounds to test locally (eg. CRON Jobs).
Specifically I want to do this using Eclipse.
Update: as of 2015 it is possible to debug AppEngine Java applications if they run on Managed VMs. Also, the debugger is a web-based hosted debugger – no support yet for your popular IDE. See Cloud Debugger.
No, this can not be done.
One of the reasons why this most probably will never be available is that GAE is a distributed cloud system, where an “application” can have multiple instances running in parallel and there is no guarantee that consequent requests (e.g. a user session) would be served by the same instance. So there would be no way to know to which instance to connect debugger to.