ERROR - failed sending message to null (160 bytes)
java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at org.jgroups.protocols.pbcast.FLUSH$FlushHeader.writeTo(FLUSH.java:890)
at org.jgroups.Message.writeHeader(Message.java:799)
at org.jgroups.Message.writeTo(Message.java:685)
at org.jgroups.protocols.TP.writeMessage(TP.java:1234)
at org.jgroups.protocols.TP.send(TP.java:1199)
at org.jgroups.protocols.TP.down(TP.java:963)
at org.jgroups.protocols.Discovery.down(Discovery.java:351)
at org.jgroups.protocols.MERGE2.down(MERGE2.java:176)
at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:364)
at org.jgroups.protocols.FD.down(FD.java:357)
at org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:95)
at org.jgroups.protocols.BARRIER.down(BARRIER.java:97)
at org.jgroups.protocols.pbcast.NAKACK.send(NAKACK.java:766)
at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:568)
at org.jgroups.protocols.UNICAST.down(UNICAST.java:437)
at org.jgroups.protocols.pbcast.STABLE.down(STABLE.java:317)
at org.jgroups.protocols.VIEW_SYNC.down(VIEW_SYNC.java:173)
at org.jgroups.protocols.pbcast.GMS.down(GMS.java:838)
at org.jgroups.protocols.FRAG2.down(FRAG2.java:175)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.down(STATE_TRANSFER.java:200)
at org.jgroups.protocols.pbcast.FLUSH.onFlushCompleted(FLUSH.java:733)
at org.jgroups.protocols.pbcast.FLUSH.up(FLUSH.java:350)
at org.jgroups.protocols.pbcast.STATE_TRANSFER.up(STATE_TRANSFER.java:144)
at org.jgroups.protocols.FRAG2.up(FRAG2.java:205)
at org.jgroups.protocols.pbcast.GMS.up(GMS.java:767)
at org.jgroups.protocols.VIEW_SYNC.up(VIEW_SYNC.java:161)
at org.jgroups.protocols.pbcast.STABLE.up(STABLE.java:234)
at org.jgroups.protocols.UNICAST.handleDataReceived(UNICAST.java:579)
at org.jgroups.protocols.UNICAST.up(UNICAST.java:250)
at org.jgroups.protocols.pbcast.NAKACK.up(NAKACK.java:714)
at org.jgroups.protocols.BARRIER.up(BARRIER.java:122)
at org.jgroups.protocols.VERIFY_SUSPECT.up(VERIFY_SUSPECT.java:167)
at org.jgroups.protocols.FD.up(FD.java:322)
at org.jgroups.protocols.FD_SOCK.up(FD_SOCK.java:300)
at org.jgroups.protocols.MERGE2.up(MERGE2.java:145)
at org.jgroups.protocols.Discovery.up(Discovery.java:246)
at org.jgroups.protocols.TP$IncomingPacket.handleMyMessage(TP.java:1510)
at org.jgroups.protocols.TP$IncomingPacket.run(TP.java:1459)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:619)
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