[jboss-jira] [JBoss JIRA] (JGRP-1861) NPE in FindSubgroupsTask

[Radim Vansa (JIRA)]

Radim Vansa created JGRP-1861:
---------------------------------

             Summary: NPE in FindSubgroupsTask
                 Key: JGRP-1861
                 URL: https://issues.jboss.org/browse/JGRP-1861
             Project: JGroups
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions: 3.5
            Reporter: Radim Vansa
            Assignee: Bela Ban


With JGroups 3.5.0.Beta9, when the node is starting, I see several NPEs:

{code}
04:07:19,396 ERROR [org.jgroups.protocols.MERGE2] (Timer-3,edg-perf01-29005) FindSubgroupsTask failed
java.lang.NullPointerException
        at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1124)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask.fetchViews(MERGE2.java:430)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask._findAndNotify(MERGE2.java:376)
        at org.jgroups.protocols.MERGE2$FindSubgroupsTask.findAndNotify(MERGE2.java:361)
        at org.jgroups.protocols.MERGE2$1.run(MERGE2.java:266)
        at org.jgroups.util.TimeScheduler3$Task.run(TimeScheduler3.java:283)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
{code}

These are probably harmless, later the cluster forms correctly.



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