[jboss-jira] [JBoss JIRA] Commented: (JGRP-659) Merge and UNICAST sequencing problem

[ http://jira.jboss.com/jira/browse/JGRP-659?page=comments#action_12410664 ] Bela Ban commented on JGRP-659: ------------------------------- I like the idea of sending the view ID (VID) with each unicast message. (However, because this changes the serialization format, we can not back port this to 2.6.3). The receivers maintain a hashmap, keyed by VID. The values are receiver windows (Entry with AckReceiverWindow). Upon reception of a message with a new VID, we create a new entry and add the message to the corresponding receiver window. Example: - V2={A,B} and V3={C,D}. - Now a merge occurs with MergeView V5. A and C install V5 in their respective subgroups - At time T, A and B install V5 - At time T+5, C and D install V5 - At time T+2 (*before* {C,D} install V5), B sends a unicast message M1 to C - C's receiver window is keyed by V3 and contains (C:50, D:20). - Now C creates a new entry for M1: V5 with B:2 - At T+5, {C,D} receive MergeView V5 - {C,D} trash all connections in VIDs smaller than V5, so V3's receiver window trashes all connections - C's receiver window for V5 is now A:1, B:2, C:1, D:1 - At T+8, B sends another unicast message M2 to C - C looks up the correct receiver window for V5 (sent with M2) and adds M2 - Now the receiver window at C for V5 is A:1, B:3, C:1, D:1 -- 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