[jboss-jira] [JBoss JIRA] Created: (JGRP-603) FLUSH: problems with TCP and concurrent startup/shutdowns

[Bela Ban (JIRA)]

FLUSH: problems with TCP and concurrent startup/shutdowns
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                 Key: JGRP-603
                 URL: http://jira.jboss.com/jira/browse/JGRP-603
             Project: JGroups
          Issue Type: Bug
            Reporter: Bela Ban
         Assigned To: Vladimir Blagojevic


The attached ZIP file has code that reproduces this.

Modify props.props (pf.cluster.transport.protocol=udp) to "tcp" and "tcp-nio" if you want to test the different stacks.

To reproduce:
- Start a number of instances (e.g. 5) concurrently. This almost never works, even under "udp". Joiners' JOIN requests time out and they have to retry (possibly because the coord is busy with the FLUSH protocol). They become singleton members and *never* merge !
- This works fine without FLUSH

- With "udp", it works almost always, with "tcp" it works 50% of the time, with "tcp-nio" is almost never works
- Randomly kill and restart instances




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