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This can only happen when two sessions are involved:
- First UISession is created and started
- During session start ULC sends a request to the server, before this happens ULC check for an empty event queue
=> FilteringEventQueue.waitForIdle() which locks the FilteringEventQueue.class
- During creation of second UISession ULC checks that the FilteringEventQueue is in place
=> FilteringEventQueue.ensureIsInstalled() which requires the FilteringEventQueue.class lock
=> We have a deadlock
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Description
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This can only happen when two sessions are involved:
- First UISession is created and started
- During session start ULC sends a request to the server, before this happens ULC check for an empty event queue
=> FilteringEventQueue.waitForIdle() which locks the FilteringEventQueue.class
- During creation of second UISession ULC checks that the FilteringEventQueue is in place
=> FilteringEventQueue.ensureIsInstalled() which requires the FilteringEventQueue.class lock
=> We have a deadlock |
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Bug
Closed
Major
Possible deadlock when UISession is created on EDT