Starting VERIFY_SUSPECT timer thread causes java.lang.IllegalThreadStateException --------------------------------------------------------------------------------- Key: JGRP-821 URL: https://jira.jboss.org/jira/browse/JGRP-821 Project: JGroups Issue Type: Bug Affects Versions: 2.6.3, 2.7 Reporter: Vladimir Blagojevic Assignee: Vladimir Blagojevic Fix For: 2.6.4, 2.7 I believe this is related to concurrent message processing of multiple suspect messages. Timer needs to be started while holding a lock - we properly publish thread references as well. java.lang.IllegalThreadStateException at java.lang.Thread.start(Unknown Source) at org.jgroups.protocols.VERIFY_SUSPECT.startTimer(VERIFY_SUSPECT.java:293) at org.jgroups.protocols.VERIFY_SUSPECT.verifySuspect(VERIFY_SUSPECT.java:240) at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:122) at org.jgroups.protocols.FD.up(FD.java:269) at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:309) at org.jgroups.protocols.MERGE2.up(MERGE2.java:144) at org.jgroups.protocols.Discovery.up(Discovery.java:244) at org.jgroups.protocols.TP.passMessageUp(TP.java:1266) at org.jgroups.protocols.TP.access$100(TP.java:49) at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1809) at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1788) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) -- 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