Uncaught exception from servlet java.util.concurrent.CancellationException

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Task Queue is updating the database (many tables)
2. User tries to query one table
3. App Engine throws this exception while task queue is running

What is the expected output? What do you see instead?
No exception
C 11-20 10:05AM 14.484 Uncaught exception from servlet 
java.util.concurrent.CancellationException at 
com.google.apphosting.runtime.AsyncFuture.getData(AsyncFuture.java:76) 
W 11-20 10:05AM 14.512 A serious problem was encountered with the process that 
handled this request, causing it to exit. This is likely to cause a new process 
to be used for

What version of the product are you using? On what operating system?
Objectify 2.2 on Windows

Please provide any additional information below.
AppEngine Task Queue is running a long process creating new records in tables.  
During that time any user can query the database (read only) and I expect the 
concurrent access to database shouldn't be a concern.  But apparently app 
engine is not happy about it.

Original issue reported on code.google.com by budb...@gmail.com on 20 Nov 2010 at 6:35

[GoogleCodeExporter]

There isn't enough information here for me to even wildly speculate about what 
the issue could be.  Do you have a full stacktrace?

Original comment by lhori...@gmail.com on 6 Dec 2010 at 10:09

[GoogleCodeExporter]

Closing this as "Not enough info" - reopen if you have more information.

Original comment by lhori...@gmail.com on 18 Mar 2011 at 5:37

• Changed state: Invalid