[jboss-jira] [JBoss JIRA] (JGRP-1373) MERGE2: findAllViews assumes the list returned by the discovery protocol is modifiable

[Dan Berindei (Created) (JIRA)]

MERGE2: findAllViews assumes the list returned by the discovery protocol is modifiable
--------------------------------------------------------------------------------------

                 Key: JGRP-1373
                 URL: https://issues.jboss.org/browse/JGRP-1373
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.0
            Reporter: Dan Berindei
            Assignee: Bela Ban


In the Infinispan test suite we use a custom TEST_PING protocol to speed up discovery and it sometimes returns Collections.emptyList(). This triggers an UnsupportedOperationException in MERGE2:

2011-10-09 10:34:30,381 ERROR (Timer-5,Infinispan-Cluster,RehashAfterPartitionMergeTest-NodeA-56050) [org.jgroups.util.T
imeScheduler2] failed executing task org.jgroups.protocols.MERGE2$1 at 4dbce33
java.lang.UnsupportedOperationException
        at java.util.AbstractList.add(AbstractList.java:148)
        at java.util.AbstractList.add(AbstractList.java:108)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask.findAllViews(MERGE2.java:325)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask._findAndNotify(MERGE2.java:255)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask.findAndNotify(MERGE2.java:246)
        at org.jgroups.protocols.MERGE2$1.run(MERGE2.java:202)
        at org.jgroups.util.TimeScheduler2$MyTask.run(TimeScheduler2.java:523)
        at org.jgroups.util.TimeScheduler2$Entry.execute(TimeScheduler2.java:428)
        at org.jgroups.util.TimeScheduler2$1.run(TimeScheduler2.java:294)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:679)


--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.jboss.org/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira