[infinispan-issues] [JBoss JIRA] (ISPN-4271) ExecutorService may deadlock in RpcManagerImpl.invokeRemotelyInFuture

[Robert Andersson (JIRA)]

Robert Andersson created ISPN-4271:
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             Summary: ExecutorService may deadlock in RpcManagerImpl.invokeRemotelyInFuture
                 Key: ISPN-4271
                 URL: https://issues.jboss.org/browse/ISPN-4271
             Project: Infinispan
          Issue Type: Bug
          Components: Core
    Affects Versions: 6.0.2.Final
         Environment: Ubuntu 14.04
            Reporter: Robert Andersson
            Assignee: Dan Berindei
            Priority: Minor


If the number of tasks active gets bigger than the size of the asyncExecutor workQueue, then invokeRemotelyInFuture will deadlock.

The deadlock is caused by DefaultExecutorFactory using ThreadPoolExecutor.CallerRunsPolicy(), so when the workQueue overflows, invokeRemotelyInFuture ends up blocking in futureSet.await() because it never gets to futureSet.countDown(). The logic basically assumes CallerRunsPolicy will never trigger.



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