Currently we are evaluating Confluence Questions and have the version : 1.0.239
I can upvote few Questions and some fail, and if clicked multiple times, the negative voting shows up that goes down upto -2.
As per the logs, this is what I can see..
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2013-12-11 22:39:24,238 ERROR [http-8585-14] [sf.hibernate.impl.SessionImpl] execute Could not synchronize database state with session
-- referer: http://xxxxxxxxx.intranet.xxxxxxxx.com:8585/questions/26673667/what-add-ons-should-be-installed-on-confluence-| url: /rest/questions/1.0/vote/question/26673667/up | userName: matrubhm
2013-12-11 22:39:24,246 ERROR [http-8585-14] [common.error.jersey.ThrowableExceptionMapper] toResponse Uncaught exception thrown by REST service
-- referer: http://xxxxxxxxx.intranet.xxxxxxxx.com:8585/questions/26673667/what-add-ons-should-be-installed-on-confluence-| url: /rest/questions/1.0/vote/question/26673667/up | userName: matrubhm
org.springframework.orm.hibernate.HibernateSystemException: SQL insert, update or delete failed (row not found); nested exception is net.sf.hibernate.HibernateException: SQL insert, update or delete failed (row not found)
at org.springframework.orm.hibernate.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:597)
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