[ https://issues.apache.org/jira/browse/GEODE-7220?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Hanson closed GEODE-7220. ------------------------------ Transition from Resolved to Closed for Apache Geode 1.11.0 RC4 release. > NPE in the logs on reconnect > ---------------------------- > > Key: GEODE-7220 > URL: https://issues.apache.org/jira/browse/GEODE-7220 > Project: Geode > Issue Type: Bug > Components: membership > Reporter: Dan Smith > Assignee: Bruce J Schuchardt > Priority: Minor > Fix For: 1.11.0 > > Attachments: npe.txt > > Time Spent: 2h 10m > Remaining Estimate: 0h > > We saw a NullPointerException in the logs when a member reconnects, see below. > It looks like it is likely caused by this code in JGroupsMessenger.start(), > which is setting the receiver to null for a window of time. Because myChannel > here is the same channel that was created before the reconnect, this means it > may be receiving messages at this time: > {code:java} > myChannel.setReceiver(null); > jgroupsReceiver = new JGroupsReceiver(); > myChannel.setReceiver(jgroupsReceiver); > {code} > {noformat} > java.lang.AssertionError: Suspicious strings were written to the log during > this run. > Fix the strings or use IgnoredException.addIgnoredException to ignore. > ----------------------------------------------------------------------- > Found suspect string in log4j at line 2233 > [error 2019/09/19 17:14:01.998 GMT <unicast receiver,bbe9b1b57f4c-16062> > tid=81] JGRP000027: failed passing message up > java.lang.NullPointerException > at org.jgroups.JChannel.invokeCallback(JChannel.java:816) > at org.jgroups.JChannel.up(JChannel.java:741) > at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1030) > at org.jgroups.protocols.FRAG2.up(FRAG2.java:165) > at org.jgroups.protocols.FlowControl.up(FlowControl.java:390) > at org.jgroups.protocols.UNICAST3.up(UNICAST3.java:442) > at > org.apache.geode.distributed.internal.membership.gms.messenger.StatRecorder.up(StatRecorder.java:73) > at > org.apache.geode.distributed.internal.membership.gms.messenger.AddressManager.up(AddressManager.java:72) > at org.jgroups.protocols.TP.passMessageUp(TP.java:1658) > at org.jgroups.protocols.TP$SingleMessageHandler.run(TP.java:1876) > at org.jgroups.util.DirectExecutor.execute(DirectExecutor.java:10) > at org.jgroups.protocols.TP.handleSingleMessage(TP.java:1789) > at org.jgroups.protocols.TP.receive(TP.java:1714) > at > org.apache.geode.distributed.internal.membership.gms.messenger.Transport.receive(Transport.java:152) > at org.jgroups.protocols.UDP$PacketReceiver.run(UDP.java:701) > at java.lang.Thread.run(Thread.java:748) > {noformat} -- This message was sent by Atlassian Jira (v8.3.4#803005)