[jboss-jira] [JBoss JIRA] Created: (JGRP-621) JOIN_RSP should interrupt thread blocking down on findInitialMembers

[Vladimir Blagojevic (JIRA)]

JOIN_RSP should interrupt thread blocking down on findInitialMembers
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                 Key: JGRP-621
                 URL: http://jira.jboss.com/jira/browse/JGRP-621
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 2.6
            Reporter: Vladimir Blagojevic
         Assigned To: Vladimir Blagojevic


When clients attempts to join it loops through:

while(!joined){
     fetch the initial members
     determine coordinator
     send join request to coordinator 
     wait for join response (timeout)
     if(joinok)
         joined = installView
}

Unlucky timing of join response arrival can delay successful view installation and lead to unforeseen problems. If waiting for join response timeouts then joining thread repeats a loop and sends a blocking request to fetch initial members again.  If response arrives while joining thread is fetching for the initial members then joining thread has to wait for fetching of the initial members to return in order to proceed with view installation. 

Fix for this issue should ensure that If successful join response arrives then joining thread should be interrupted and proceed with view installation immediately.


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