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https://issues.apache.org/jira/browse/RIVER-467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shawn Ellis updated RIVER-467:
------------------------------
Attachment: LeaseRenewalManager-NPE-1.patch
> NullPointerException when JoinManager is terminating
> ----------------------------------------------------
>
> Key: RIVER-467
> URL: https://issues.apache.org/jira/browse/RIVER-467
> Project: River
> Issue Type: Bug
> Components: com_sun_jini_lookup
> Affects Versions: River_3.0.0
> Reporter: Shawn Ellis
> Priority: Minor
> Attachments: LeaseRenewalManager-NPE-1.patch
>
>
> Every now and then I would encounter a NullPointerException with the
> JoinManager. The way that I was able to reproduce this problem was to have a
> service up and running and then switch the network on my laptop. For example,
> I would switch from one wifi network to another.
> I've attached a patch that protects against the NullPointerException and
> seems to work fine when switching networks. [^LeaseRenewalManager-NPE-1.patch]
> {code:java}
> Oct 7 14:8:28 CDT SEVERE:thr 652:Exception in thread
> "LeaseRenewalManager_thread-3"
> Oct 7 14:8:28 CDT SEVERE:thr 652:java.lang.NullPointerException
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lookup.JoinManager$ProxyReg.terminate(JoinManager.java:1266)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lookup.JoinManager.removeTasks(JoinManager.java:2774)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lookup.JoinManager.access$400(JoinManager.java:456)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lookup.JoinManager$ProxyReg$DiscLeaseListener.notify(JoinManager.java:1188)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lease.LeaseRenewalManager.tell(LeaseRenewalManager.java:1412)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lease.LeaseRenewalManager.access$500(LeaseRenewalManager.java:322)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> net.jini.lease.LeaseRenewalManager$RenewTask.run(LeaseRenewalManager.java:451)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
> Oct 7 14:8:28 CDT SEVERE:thr 652: at
> java.base/java.lang.Thread.run(Thread.java:844)
> {code}
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