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

[Bela Ban (JIRA)]

     [ https://issues.jboss.org/browse/JGRP-1861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban updated JGRP-1861:
---------------------------

    Fix Version/s: 3.5


> 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
>            Priority: Minor
>             Fix For: 3.5
>
>
> 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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