I am attempting to implement an application that performs some occasional web crawling as a component of its day-to-day functionality. The web crawling code can be executed from a jsp file. When I test it on my computer by accessing the jsp file, it performs its desired function nicely, as expected. So I decided to go try it on the app engine, and if I run it by accessing the .jsp file, I get a HardDeadlineExceededError, which I am told occurs when the request takes longer than 30 seconds, which is understandable. However, when I try to execute it as a cron job, every time it runs, it ends after about 5 seconds, with a different exception: java.lang.ClassCastException: java.lang.ArrayIndexOutOfBoundsException cannot be cast to javax.servlet.ServletException ...and the stack trace doesn't reference any of my code at all, which is making this difficult to debug. Does anyone have a clue what might be causing something like this?
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