[jboss-jira] [JBoss JIRA] Updated: (JGRP-1027) Race conditions can have NAKACK try to send to hosts don't have a receiver window yet
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https://jira.jboss.org/jira/browse/JGRP-1027?page=com.atlassian.jira.plug...
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Gray Watson updated JGRP-1027:
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Attachment: NAKACKEarlyTest.java
Here's a unit test which demonstrates the NAKACK missing window problem. I wrote the
test to demonstrate the issue but I've seen the issue in production on our systems
which use multicast messaging a lot.
Race conditions can have NAKACK try to send to hosts don't have a
receiver window yet
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Key: JGRP-1027
URL: https://jira.jboss.org/jira/browse/JGRP-1027
Project: JGroups
Issue Type: Bug
Affects Versions: 2.6.12
Reporter: Gray Watson
Assignee: Bela Ban
Priority: Minor
Fix For: 2.9
Attachments: NAKACK.java.patch, NAKACKEarlyTest.java
We have seen NPEs in NAKACK trying to send to hosts who do not have a registered receiver
window. I'd like to apply the attached patch which does a better job of creating a
receiver window on the fly in these circumstances. One issue what the sequence number
should be initialize to -- the patch uses 0 which has worked for us.
Thanks,
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