Gabor Gyongyi created DROOLS-175: ------------------------------------ Summary: Deadlock when invoking queries concurrently Key: DROOLS-175 URL: https://issues.jboss.org/browse/DROOLS-175 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 5.5.0.Final Reporter: Gabor Gyongyi Assignee: Mark Proctor I have a query that I want to execute from multiple threads using statefulKnowledgeSession.getQueryResults. One of the threads wants to invoke lock.writeLock().lock() in the 105th line of UpgradableReentrantReadWriteLock. The problem is that the other threads already own the readLock and they cannot proceed until the first query thread finishes with its job. They will wait for each other. I experienced the same problem with 5.4.0.Final as well. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira