If you see rare "stuck" requests that either hit the overall request deadline (on frontend instances), or seem to hang "forever" on backend instances, there is a very small chance you are running into this bug we found in App Engine Standard's logging library. The brief summary is if you call logging at import time while other threads are also logging, it is possible that you can deadlock your requests. We were running into this on rare occasions, that recently started happening more often (a few times a day).
We have a workaround that we've been using for the past few days, and it seems to solve the problem. If you run into this, I'd love to hear about it. Issue: https://issuetracker.google.com/issues/65016348 Description and workaround: https://github.com/evanj/app-engine-log-deadlock -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/0fcdebf5-56fa-4fe2-8bf9-7a24e3f1a5fd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
