Repeated UDP java.io.InterruptedIOException logging to file ----------------------------------------------------------- Key: JGRP-1186 URL: https://jira.jboss.org/jira/browse/JGRP-1186 Project: JGroups Issue Type: Bug Affects Versions: 2.6.10 Environment: Solaris, Sun Java 1.6.0_16, JBoss 5.1.0.GA with JBoss Messaging installed Reporter: Andrew McDowell Assignee: Bela Ban As my application runs, I get repeated stack traces in the file that look like: 05:03:18,386 ERROR [UDP] failed sending message to null (56 bytes) java.lang.Exception: dest=/224.8.8.8:45568 (59 bytes) at org.jgroups.protocols.UDP._send(UDP.java:361) at org.jgroups.protocols.UDP.__AW_sendToAllMembers(UDP.java:302) at org.jgroups.protocols.UDP.sendToAllMembers(UDP.java) at org.jgroups.protocols.TP.doSend(TP.java:1486) at org.jgroups.protocols.TP.send(TP.java:1476) at org.jgroups.protocols.TP.__AW_down(TP.java:1197) at org.jgroups.protocols.TP.down(TP.java) at org.jgroups.protocols.PING.sendMcastDiscoveryRequest(PING.java:278) at org.jgroups.protocols.PING.__AW_sendGetMembersRequest(PING.java:259) at org.jgroups.protocols.PING.sendGetMembersRequest(PING.java) at org.jgroups.protocols.Discovery$PingSenderTask$1.run(Discovery.java:40 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441 at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java: at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.a at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.r at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.r at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecu at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor. at java.lang.Thread.run(Thread.java:619) Caused by: java.io.InterruptedIOException: operation interrupted at java.net.PlainDatagramSocketImpl.send(Native Method) at java.net.DatagramSocket.send(DatagramSocket.java:612) at org.jgroups.protocols.UDP._send(UDP.java:352) ... 19 more This seems very similar to JGRP-647 and JGRP-1161. I believe the problem to be that org.jgroups.protocols.UDP._send() is catching all Exceptions, and wrapping them with java.lang.Exception to re-throw with additional info. However, it also catches InterruptedIOExceptions, and wraps them. The rest of JGroups (and the DiscoveryTask in particular) protect themselves from logging java.io.InterruptedIOExceptions, but not against InterruptedIOExceptions wrapped by Exceptions. I checked the source for 2.6.10.GA, 2.6.14.GA, and 2.9.0.GA, and they all still had the InterruptedIOException wrapped by Exception. I have fixed the problem by just changing my log4j settings, as the problem is intermittent, not constant. JGroups itself seems to be working correctly, it's just verbose in it's logging. Additionally, it may just be that the out-of-the-box JBoss AS 5.1.0.GA is misconfigured. This seems to be related to JMS and Messaging, as the port numbers involved are always the ones configured by JBoss Messaging. I apologize if this is a duplicate bug. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira