[infinispan-issues] [JBoss JIRA] (ISPN-10943) Handle thread pool queue rejection when invoking rxjava code

[Will Burns (Jira)]

Will Burns created ISPN-10943:
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             Summary: Handle thread pool queue rejection when invoking rxjava code
                 Key: ISPN-10943
                 URL: https://issues.jboss.org/browse/ISPN-10943
             Project: Infinispan
          Issue Type: Bug
          Components: Core
            Reporter: Will Burns
            Assignee: Will Burns
             Fix For: 10.1.0.Beta1


Currently the BlockingRejectedExecutionHandler throws a Rejected exception at https://github.com/infinispan/infinispan/blob/master/commons/src/main/java/org/infinispan/commons/util/concurrent/BlockingRejectedExecutionHandler.java#L38 when a non blocking thread can't pass a task to the blocking queue.

Unfortunately in rxjava 2 they catch the exception and log it and do nothing else at https://github.com/ReactiveX/RxJava/blob/2.x/src/main/java/io/reactivex/internal/schedulers/ExecutorScheduler.java#L175. This leads to having a publisher that never completes.

We should be able to throw a different exception, not RejectedExecutionException, and rxjava2 should catch and properly set it in the publisher to prevent this from happening.



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