[jboss-jira] [JBoss JIRA] Commented: (JGRP-455) Problem with retransmission: message not found
[ http://jira.jboss.com/jira/browse/JGRP-455?page=comments#action_12361805 ]
Bela Ban commented on JGRP-455:
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attached tmp.txt. The issue is that STABLE message #8 has 100698 as highest delivered
seqno for 10.68.0.33, then #9 is 100695, then #10 is 100695 !
Issue: each stability message must be >= the previous one, investigate why #8 is 100698
! This causes message 100698 to get purged, therefore no retransmission. Points to a bug
in STABLE
Problem with retransmission: message not found
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Key: JGRP-455
URL: http://jira.jboss.com/jira/browse/JGRP-455
Project: JGroups
Issue Type: Bug
Affects Versions: 2.4.1 SP1
Reporter: Bela Ban
Assigned To: Bela Ban
Priority: Blocker
Fix For: 2.5
Attachments: tmp.txt, tmp2.txt, udp-atl.xml
Sometimes a sender cannot find a message with a seqno as requested by a receiver. The
seqno requested (47176) was already purged, sent_msgs: [48059 - 48090] (32)
This could be either an issue in STABLE, which prematurely purges messages although not
all members agreed on the highest seqnos seen, or NAKACK, which might incorrectly
'change' seqnos. Very hard to reproduce !
Trace:
42032 [ERROR] [OOB Thread,perf,10.68.32.33:32968] NAKACK.handleXmitReq(): -
(requester=10.68.28.33:33763, local_addr=10.68.32.33:32968) message
10.68.32.33:32968::47176 not found in sent msgs [48059 - 48090] (32)
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