[jboss-jira] [JBoss JIRA] (JGRP-1963) TCP_NIO2 starts dropping messages

[Bela Ban (JIRA)]

Bela Ban created JGRP-1963:
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             Summary: TCP_NIO2 starts dropping messages
                 Key: JGRP-1963
                 URL: https://issues.jboss.org/browse/JGRP-1963
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 3.6.5
            Reporter: Bela Ban
            Assignee: Bela Ban
            Priority: Critical
             Fix For: 3.6.6


At some point, {{TCP_NIO2}} starts dropping messages, at either the send or receive direction (still need to find out). This shows itself when e.g. a JOIN fails: the joiner sends a lot of {{JOIN-REQ}} messages and gets {{JOIN-RSP}} msgs from the coord, but doesn't receive them.
If {{GMS.max_join_attempts="0"}}, then this goes on forever, or until the joiner doesn't discover any nodes anymore.
{{probe.sh jmx=UNICAST3.printConnections}} shows that messages are sent but no acks are received.
Clearing the connection table in {{TCP_NIO2}} fixes the problem: {{probe.sh op=TCP_NIO2.clearConnections}}. 
This shows that the issue is indeed in {{TCP_NIO2}}. Also, {{TCP}} and {{UDP}} work.



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