I'm trying to query my app's datastore for a large amount of data - approx. 
3000000 entities, over the 60-second timeout.
So I've implemented cursors according to the tutorial here 
<https://cloud.google.com/appengine/docs/java/datastore/jdo/queries#Query_Cursors>,
 
and it works for the first time - meaning if I send a null cursor I get the 
first 100 results and a cursor string, and when I send the second request 
with the cursor string I get the next 100 results.
Problem is - I always get the same cursor string, and the same results when 
I send it.

Is this a bug? An issue when using Spring (I've read that Spring doesn't 
play well with GAE)?

Thanks for any help, I'm working on this for a while now...

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