[jboss-jira] [JBoss JIRA] (JGRP-2159) Delta view cannot be installed

[Bela Ban (JIRA)]

Bela Ban created JGRP-2159:
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             Summary: Delta view cannot be installed
                 Key: JGRP-2159
                 URL: https://issues.jboss.org/browse/JGRP-2159
             Project: JGroups
          Issue Type: Bug
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 4.1, 4.0.1


A DeltaView cannot be installed because the ref view-id is not the current view-id. 
Looking at the view sequence for members J, K and L:

{noformat}
19:22:54,278 DEBUG (testng-Test:[]) [GMS] J: installing view [J|0] (1) [J]
19:22:56,519 DEBUG (testng-Test:[]) [GMS] K: installing view [J|1] (2) [J, K]
19:22:56,572 DEBUG (jgroups-7,J:[]) [GMS] J: installing view [J|1] (2) [J, K]
19:22:56,590 DEBUG (jgroups-5,K:[]) [GMS] K: installing view [J|2] (2) [J, K]
19:22:58,585 DEBUG (jgroups-5,J:[]) [GMS] J: installing view [J|3] (3) [J, K, L]
19:23:00,603 DEBUG (testng-Test:[]) [GMS] L: installing view [J|3] (3) [J, K, L]
{noformat}

K cannot install DeltaView J|3 because it has view J|2 but the DeltaView has ref view-id J|1.

The reason is that J|2 was apparently installed *only* at K (but not at coordinator J1!), despite it being the same view as J|1.

We need to look into why J|2 was installed at K only. Second line of defense: when a DeltaView cannot be installed, send a message to the view sender (coord) and solicit the full view instead.

See the attached log.



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