[jboss-jira] [JBoss JIRA] Updated: (JGRP-979) TCP DataOutputStream.flush() hang

TCP DataOutputStream.flush() hang --------------------------------- Key: JGRP-979 URL: https://jira.jboss.org/jira/browse/JGRP-979 Project: JGroups Issue Type: Bug Affects Versions: 2.6.10.merge Environment: Ubuntu Server Linux: $ uname -a Linux jabber04 2.6.27-11-generic #1 SMP Thu Jan 29 19:28:32 UTC 2009 x86_64 GNU/Linux $ java -version java version "1.6.0_10" Java(TM) SE Runtime Environment (build 1.6.0_10-b33) Java HotSpot(TM) 64-Bit Server VM (build 11.0-b15, mixed mode) Reporter: Bulat Nigmatullin Assignee: Bela Ban Attachments: nohup1.out JGroups cluster consist of 2 nodes. It uses 2 JChannel: one for config purposes, another for data transfer. Sometimes randomly servers hangs up trying to send message to cluster. I think the main reason is this: "Timer-3,tcp,81.19.94.71:7800" daemon prio=10 tid=0x00007f155c7a1400 nid=0x3eec runnable [0x0000000042f92000..0x0000000042f92c80] java.lang.Thread.State: RUNNABLE at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) at java.net.SocketOutputStream.write(SocketOutputStream.java:153) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) - locked <0x00007f15688678f0> (a java.io.BufferedOutputStream) at java.io.DataOutputStream.flush(DataOutputStream.java:123) at org.jgroups.blocks.BasicConnectionTable$Connection.doSend(BasicConnectionTable.java:546) at org.jgroups.blocks.BasicConnectionTable$Connection._send(BasicConnectionTable.java:522) at org.jgroups.blocks.BasicConnectionTable$Connection.send(BasicConnectionTable.java:506) at org.jgroups.blocks.BasicConnectionTable.send(BasicConnectionTable.java:322) at org.jgroups.protocols.TCP.send(TCP.java:55) at org.jgroups.protocols.BasicTCP.sendToSingleMember(BasicTCP.java:219) at org.jgroups.protocols.BasicTCP.sendToAllMembers(BasicTCP.java:204) at org.jgroups.protocols.TP.doSend(TP.java:1486) at org.jgroups.protocols.TP.access$2500(TP.java:49) at org.jgroups.protocols.TP$Bundler.sendBundledMessages(TP.java:2059) at org.jgroups.protocols.TP$Bundler.access$2900(TP.java:1951) at org.jgroups.protocols.TP$Bundler$BundlingTimer.run(TP.java:2088) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:165) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) I've done few thread dumps during 30 minutes and this thread was in this state in every dump. If it will help i can send full thread dump.