What steps will reproduce the problem?
1. Create entity with some field, lets say "private int version = 0".
2. Increase it ( entity.setVersion(entity.getVersion()+1 ) transactionally few
times (lets say 9 times) from two different GAE instances, with few seconds
delay between requests.
3. Shutdown one of the instances
4. Increase version again.
5. Check the value of the field.
What is the expected output?
value = 10
What do you see instead?
value < 10
3.1.3
What version of the product are you using? On what operating system?
Windows 7.
Appengine 1.9.17.
Datanucleus v2
datanucleus-appengine-2.1.2.jar
datanucleus-api-jdo-3.1.3.jar
datanucleus-api-jpa-3.1.3.jar
Please provide any additional information below.
Example and code I used is here:
http://stackoverflow.com/questions/27872202/jdo-transactions-many-gae-instances-
overriding-data
I tried to make it work with both JDO and JPA (with use of EntityManager merge
method), the problem is the same. It works fine with low level api, but not
with JDO / JPA. I think its critical issue (unless I use it wrong), and makes
the plugin totally useless in any serious application.
Original issue reported on code.google.com by pawel.sz...@gmail.com on 11 Jan 2015 at 2:22
Original issue reported on code.google.com by
pawel.sz...@gmail.comon 11 Jan 2015 at 2:22