[IGNITE-9436] Compute task may cause a deadlock on node stop.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: compute
• Labels: MakeTeamcityGreenAgain deadlock
• Assignee: Unassigned
• Reporter: Andrey Mashenkov
• Created: 30/Aug/18 15:31
• Updated: 30/Aug/18 15:32

Description

Task that is waiting for async compute call result on reduce may lead to deadlock on node stop.

This task will hold GridTaskProcessor.readlock and waits for remote call result on future.
At that time node stopping thread will try to acquire GridTaskProcessor.writeLock.
GridTaskProcessor job message listener will try to acquire GridTaskProcessor.readLock with no success.

So, grid can't be stopped as there is a task on fly, but remote call result also can't be delivered to task.