[jboss-jira] [JBoss JIRA] (JGRP-1465) [org.jgroups.protocols.TCP] failed sending message to NJ-WKST-2CF6D2X-62641 (91 bytes): java.lang.NullPointerException, cause: null

[org.jgroups.protocols.TCP] failed sending message to NJ-WKST-2CF6D2X-62641 (91 bytes): java.lang.NullPointerException, cause: null ----------------------------------------------------------------------------------------------------------------------------------- Key: JGRP-1465 URL: https://issues.jboss.org/browse/JGRP-1465 Project: JGroups Issue Type: Bug Affects Versions: 3.0.10 Environment: TCP + MPING Reporter: freeliuade freeliuade Assignee: Bela Ban Priority: Minor Fix For: 3.0.11, 3.1 using TCP + MPING, on connect a channel, throws following error: ------------ 2012-05-16 12:20:16,604 ERROR [org.jgroups.protocols.TCP] failed sending message to NJ-WKST-2CF6D2X-62641 (91 bytes): java.lang.NullPointerException, cause: null ------------ using debug to get the exception detail as below: 2012-05-16 16:05:39,690 ERROR [STDERR] java.lang.NullPointerException 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.TCP.send(TCP.java:56) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.BasicTCP.sendUnicast(BasicTCP.java:95) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.TP.sendToSingleMember(TP.java:1214) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.TP.doSend(TP.java:1198) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.TP.send(TP.java:1184) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.TP.down(TP.java:1041) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.Discovery.sendDiscoveryResponse(Discovery.java:512) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.Discovery.up(Discovery.java:347) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.PING.up(PING.java:69) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.MPING.up(MPING.java:176) 2012-05-16 16:05:39,690 ERROR [STDERR] at org.jgroups.protocols.MPING.run(MPING.java:327) 2012-05-16 16:05:39,690 ERROR [STDERR] at java.lang.Thread.run(Thread.java:662) and it should caused by MPING received a message, but the jchannel initialize doesn't done at this time. (TCPConnectionMap(ct) doesn't initialized in TCP). I guess this error should be harmless, but I think MPING should receive message after jchannel initialze done.