Critical When UNICAST3 tries to log a "FailedToDeliverMsg", it translates to the following pattern from jg-messages.properties:
"JGRP000039: %s: failed to deliver %s %s: %t"
This causes the following exception (because %t is not a valid conversion token):
java.util.UnknownFormatConversionException: Conversion = 't'
at java.util.Formatter$FormatSpecifier.<init>(Formatter.java:2690)
at java.util.Formatter.parse(Formatter.java:2528)
at java.util.Formatter.format(Formatter.java:2469)
at java.util.Formatter.format(Formatter.java:2423)
at java.lang.String.format(String.java:2797)
at org.jboss.logmanager.ExtLogRecord.formatRecord(ExtLogRecord.java:434)
at org.jboss.logmanager.ExtLogRecord.getFormattedMessage(ExtLogRecord.java:397)
at org.jboss.logmanager.formatters.Formatters$10.renderRaw(Formatters.java:568)
at org.jboss.logmanager.formatters.Formatters$JustifyingFormatStep.render(Formatters.java:225)
at org.jboss.logmanager.formatters.MultistepFormatter.format(MultistepFormatter.java:86)
at org.jboss.logmanager.ExtFormatter.format(ExtFormatter.java:35)
at org.jboss.logmanager.handlers.WriterHandler.doPublish(WriterHandler.java:49)
at org.jboss.logmanager.ExtHandler.publish(ExtHandler.java:79)
at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:296)
at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:304)
at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:304)
at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:304)
at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:304)
at org.jboss.logmanager.Logger.logRaw(Logger.java:721)
at org.jboss.logmanager.Logger.log(Logger.java:672)
at org.jboss.logging.JBossLogManagerLogger.doLogf(JBossLogManagerLogger.java:50)
at org.jboss.logging.Logger.errorf(Logger.java:1369)
at org.jboss.as.clustering.jgroups.LogFactory$LogAdapter.error(LogFactory.java:104)
at org.jgroups.protocols.UNICAST3.handleDataReceived(UNICAST3.java:697)
at org.jgroups.protocols.UNICAST3.up(UNICAST3.java:381)
at org.jgroups.protocols.pbcast.NAKACK2.up(NAKACK2.java:600)
at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:147)
at org.jgroups.protocols.FD.up(FD.java:255)
at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:301)
at org.jgroups.protocols.MERGE2.up(MERGE2.java:209)
at org.jgroups.protocols.Discovery.up(Discovery.java:379)
at org.jgroups.protocols.MPING.up(MPING.java:181)
at org.jgroups.protocols.TP$ProtocolAdapter.up(TP.java:2609)
at org.jgroups.protocols.TP.passMessageUp(TP.java:1399)
at org.jgroups.protocols.TP$MyHandler.run(TP.java:1585)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
