[infinispan-issues] [JBoss JIRA] (ISPN-2039) Iteration in DistributedTaskLifecycleService using ServiceLoader fails

[Vladimir Blagojevic (JIRA)]

Vladimir Blagojevic created ISPN-2039:
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             Summary: Iteration in DistributedTaskLifecycleService using ServiceLoader fails
                 Key: ISPN-2039
                 URL: https://issues.jboss.org/browse/ISPN-2039
             Project: Infinispan
          Issue Type: Bug
          Components: Distributed Cache
    Affects Versions: 5.1.4.FINAL
         Environment: This problem has been observed in AS 7 environment rather than Infinispan standalone
            Reporter: Ales Justin
            Assignee: Vladimir Blagojevic
            Priority: Minor
             Fix For: 5.2.0.ALPHA1, 5.2.0.FINAL


For some unknown reason iteration over available DistributedTaskLifecycle services in DistributedTaskLifecycleService fails, and it fails only in AS environment:

Caused by: java.util.NoSuchElementException
	at java.util.AbstractList$Itr.next(AbstractList.java:350) [classes.jar:1.6.0_31]
	at java.util.Collections$1.nextElement(Collections.java:3389) [classes.jar:1.6.0_31]
	at java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:332) [classes.jar:1.6.0_31]
	at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:415) [classes.jar:1.6.0_31]
	at org.infinispan.distexec.spi.DistributedTaskLifecycleService.onPreExecute(DistributedTaskLifecycleService.java:50) [infinispan-core-5.2.0-SNAPSHOT.jar:5.2.0-SNAPSHOT]

   public <T> void onPreExecute(Callable<T> task) {
      try {
         Iterator<DistributedTaskLifecycle> i = loader.iterator();
         while (i.hasNext()) { // <------------------------------------------------- we CHECK before
            DistributedTaskLifecycle cl = i.next();
            cl.onPreExecute(task);

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