[jboss-jira] [JBoss JIRA] Created: (JGRP-700) FLUSH: flushing should span merge

[Bela Ban (JIRA)]

FLUSH: flushing should span merge
---------------------------------

                 Key: JGRP-700
                 URL: http://jira.jboss.com/jira/browse/JGRP-700
             Project: JGroups
          Issue Type: Task
            Reporter: Bela Ban
         Assigned To: Vladimir Blagojevic
             Fix For: 2.7


When we run flush during a merge (say between {A,B} and {C,D}), then the flush protocol is run only when installing the new merge view {A,B,C,D} in both subgroups *individually*, e.g. flush is run for {A,B} and for {C,D}. If the flush in {C,D} completes sooner than the one in {A,B}, C and D will be able to send messages during {A,B}'s flush phase, thus violating the properties of flush.

The change should be as follows:
- A merge between the 2 subgroups is detected
- If flush is enabled, run the flush protocol in {A,B} and {C,D}, *before* the new view V2={A,B,C,D} is installed
- Install V2
- When the view installation is complete, ie. A and C have acked it, only *then* complete the flush and allow members to resume message sending

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira