Dan Smith created GEODE-7220:
--------------------------------
Summary: 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
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)
