[jira] [Created] (CAMEL-10873) camel-sjms transacted routes dead-lock when exceptions are thrown by asynchronous processors

["Daniele Fognini (JIRA)" <ji...@apache.org>]

Daniele Fognini created CAMEL-10873:
---------------------------------------

             Summary: camel-sjms transacted routes dead-lock when exceptions are thrown by asynchronous processors
                 Key: CAMEL-10873
                 URL: https://issues.apache.org/jira/browse/CAMEL-10873
             Project: Camel
          Issue Type: Bug
          Components: camel-sjms
    Affects Versions: 2.18.2, 2.19.0
            Reporter: Daniele Fognini


SJMS Consumers attempt rollback of the JMS Session if an exception is thrown along the Camel route. The rollback is attempted where the exception occurs and not on the original synchronous pipeline.

For example with ActiveMQ and the thread component (see attached unit test)
{code:java}
AtomicInteger counter = new AtomicInteger();

from(destination + "?acknowledgementMode=SESSION_TRANSACTED&transacted=true")
   .threads()
   .process(exchange -> {
      if (counter.incrementAndGet() < TRANSACTION_REDELIVERY_COUNT) {
          throw new IllegalArgumentException();
      }
    })
    .to("mock:async.exception")
{code}

`Session.rollback()` must be called by the ActiveMQ Thread, but is attempted by the asynchronous Camel thread, resulting in a dead-lock:

{noformat}
"Camel (camel-1) thread #0 - Threads" Id=26 BLOCKED on java.lang.Object@4b9df8a owned by "ActiveMQ Session Task-1" Id=22
    org.apache.activemq.ActiveMQMessageConsumer.rollback(ActiveMQMessageConsumer.java:1212)
    org.apache.activemq.ActiveMQMessageConsumer$5.afterRollback(ActiveMQMessageConsumer.java:1091)
    org.apache.activemq.TransactionContext.afterRollback(TransactionContext.java:162)
    org.apache.activemq.TransactionContext.rollback(TransactionContext.java:287)
    org.apache.activemq.ActiveMQSession.rollback(ActiveMQSession.java:603)
    org.apache.camel.component.sjms.tx.SessionTransactionSynchronization.onFailure(SessionTransactionSynchronization.java:54)
    org.apache.camel.util.UnitOfWorkHelper.doneSynchronizations(UnitOfWorkHelper.java:101)
    org.apache.camel.impl.DefaultUnitOfWork.done(DefaultUnitOfWork.java:234)
    org.apache.camel.util.UnitOfWorkHelper.doneUow(UnitOfWorkHelper.java:65)
    org.apache.camel.processor.CamelInternalProcessor$UnitOfWorkProcessorAdvice.after(CamelInternalProcessor.java:675)
    org.apache.camel.processor.CamelInternalProcessor$UnitOfWorkProcessorAdvice.after(CamelInternalProcessor.java:630)
    org.apache.camel.processor.CamelInternalProcessor$InternalCallback.done(CamelInternalProcessor.java:247)
    org.apache.camel.processor.CamelInternalProcessor$InternalCallback.done(CamelInternalProcessor.java:258)
    org.apache.camel.processor.RedeliveryErrorHandler$2.done(RedeliveryErrorHandler.java:553)
    org.apache.camel.processor.Pipeline$1.done(Pipeline.java:147)
    org.apache.camel.processor.ThreadsProcessor$ProcessCall.run(ThreadsProcessor.java:87)
    java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    java.util.concurrent.FutureTask.run(FutureTask.java:266)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:745)

"ActiveMQ Session Task-1" Id=22 WAITING on java.util.concurrent.CountDownLatch$Sync@6955cb39
    sun.misc.Unsafe.park(Native Method)
    java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
    java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
    org.apache.camel.impl.DefaultAsyncProcessorAwaitManager.await(DefaultAsyncProcessorAwaitManager.java:75)
    org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:105)
    org.apache.camel.component.sjms.consumer.InOnlyMessageHandler.handleMessage(InOnlyMessageHandler.java:65)
    org.apache.camel.component.sjms.consumer.AbstractMessageHandler.onMessage(AbstractMessageHandler.java:89)
    org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1401)
    org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:131)
    org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:202)
    org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:133)
    org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:48)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:745)
{noformat}



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