I have an app that started getting all kinds of write errors at about 12:00 
Pacific. Other apps are fine. 
This particular app (and others) are on Python2.7 It went from about 0 
errors per sec to 3 errors per sec. It is serving around 45 requests per 
sec right now.

I am seeing exceptions like:

CancelledError(The API call datastore_v3.Put() was explicitly cancelled.)


I am also seeing DeadlineExceededError s. What I am thinking is that I am 
getting a *bunch* of timeouts on writes all of a sudden. The entities in 
question are all in the same entity group, but the writes and reads are not 
in a transaction. I don't see sort of deadlock potential - it really seems 
like a datastore issue. 

Is anyone else having issues?

-- Jay

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