[jboss-jira] [JBoss JIRA] Commented: (JGRP-1111) Draw demo does not work using state transfer, sequencer, and flush together.
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https://jira.jboss.org/jira/browse/JGRP-1111?page=com.atlassian.jira.plug...
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Bela Ban commented on JGRP-1111:
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The problem is in SEQUENCER.broadcast(): a message broadcast on behalf of someone else is
copied, but the headers are *not* copied. This means that a STOP-FLUSH header is NOT
copied and therefore won't ever be received by anyone else !
The simple solution is to copy the headers, too. But I need to investigate whether this
doesn't have other ramifications, for example what if we copy UNICAST or NAKACK
headers ? The forwarded message is a unicast, but is sent as a multicast by the coord:
won't the presence of a UNICAST header lead to it being processed as a unicast *and*
multicast message ?
Maybe the better solution is to wrap a forwarded message in the payload...
Draw demo does not work using state transfer, sequencer, and flush
together.
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Key: JGRP-1111
URL: https://jira.jboss.org/jira/browse/JGRP-1111
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.13
Environment: CentOS 5.4
Java 1.6.0.17
Reporter: sean chandler
Assignee: Vladimir Blagojevic
Fix For: 2.6.14, 2.8
Attachments: jgroups_broken.xml, jgroups_works.xml
Draw demo does not work in conjunction with state transfer, sequencer, and flush in the
stack. Nodes will join initially and form a cluster. Killing master node puts the
survivor in an infinite flush block. The killed node will never join the cluster again.
Bug is not present in version 2.8.0CR6.
Reproduce:
Start two nodes using the command lines below.
Draw on both panels.
Kill master node.
Draw on survivor.
Bring up killed node.
Infinite flush block (regardless of flush timeout).
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
x.x.x.0 0.0.0.0 255.255.240.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
224.0.0.0 0.0.0.0 240.0.0.0 U 0 0 0 eth1
0.0.0.0 x.x.x.x.254 0.0.0.0 UG 0 0 0 eth0
node0> java -classpath commons-logging.jar:jgroups-all.jar
-Djava.net.preferIPv4Stack=true -Djgroups.bind_addr=169.254.0.1 org.jgroups.demos.Draw
-state -props jgroups.xml
node1> java -classpath commons-logging.jar:jgroups-all.jar
-Djava.net.preferIPv4Stack=true -Djgroups.bind_addr=169.254.0.2 org.jgroups.demos.Draw
-state -props jgroups.xml
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