[infinispan-issues] [JBoss JIRA] (ISPN-3035) Members can re-appear by itself in the consistent hash after leaving

[Mircea Markus (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-3035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mircea Markus updated ISPN-3035:
--------------------------------

    Fix Version/s: 5.3.0.CR1
                       (was: 5.3.0.Beta2)

    
> Members can re-appear by itself in the consistent hash after leaving
> --------------------------------------------------------------------
>
>                 Key: ISPN-3035
>                 URL: https://issues.jboss.org/browse/ISPN-3035
>             Project: Infinispan
>          Issue Type: Bug
>          Components: State transfer
>    Affects Versions: 5.2.5.Final, 5.3.0.Alpha1
>            Reporter: Dan Berindei
>            Assignee: Dan Berindei
>             Fix For: 5.3.0.CR1
>
>         Attachments: dret.log, dret2.log
>
>
> Seen as an intermittent failure in DataRehashedEventTest:
> {noformat}
> 2013-04-23 14:07:45,459 DEBUG (testng-DataRehashedEventTest) [org.infinispan.manager.DefaultCacheManager] Stopping cache manager ISPN on NodeC-58711
> 2013-04-23 14:07:45,468 INFO  (testng-DataRehashedEventTest) [org.infinispan.remoting.transport.jgroups.JGroupsTransport] ISPN000080: Disconnecting and closing JGroups Channel
> 2013-04-23 14:07:46,469 DEBUG (testng-DataRehashedEventTest) [org.jgroups.protocols.pbcast.GMS] NodeC-58711: sending LEAVE request to NodeA-28008
> 2013-04-23 14:07:46,489 DEBUG (Incoming-2,ISPN,NodeA-28008) [org.jgroups.protocols.pbcast.GMS] NodeA-28008: installing [NodeA-28008|4] [NodeA-28008, NodeB-46156, NodeC-58711]
> 2013-04-23 14:07:46,491 DEBUG (asyncTransportThread-0,NodeA) [org.infinispan.topology.ClusterTopologyManagerImpl] Starting cluster-wide rebalance for cache ___defaultcache, topology = CacheTopology{id=8, currentCH=DefaultConsistentHash{numSegments=60, numOwners=2, members=[NodeA-28008, NodeB-46156]}, pendingCH=DefaultConsistentHash{numSegments=60, numOwners=2, members=[NodeA-28008, NodeB-46156, NodeC-58711]}}
> 2013-04-23 14:07:49,493 ERROR (testng-DataRehashedEventTest) [org.infinispan.test.fwk.UnitTestTestNGListener] Test testJoinAndLeave(org.infinispan.statetransfer.DataRehashedEventTest) failed.
> java.lang.AssertionError: expected [2] but found [6]
>     at org.testng.Assert.fail(Assert.java:94)
>     at org.testng.Assert.failNotEquals(Assert.java:494)
>     at org.testng.Assert.assertEquals(Assert.java:123)
>     at org.testng.Assert.assertEquals(Assert.java:370)
>     at org.testng.Assert.assertEquals(Assert.java:380)
>     at org.infinispan.statetransfer.DataRehashedEventTest.testJoinAndLeave(DataRehashedEventTest.java:114)
> {noformat}
> The initial cluster has 3 nodes: A, B, C. C is killed, but somehow remains in the ClusterCacheStatus on the coordinator. 
> Then C re-appears in the JGroups view (possibly a JGroups issue). The problem in Infinispan is that the coordinator now sees C as a joiner, and it rebalances the cache to include C in the consistent hash again.

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