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  1. JBoss Enterprise Application Platform
  2. JBEAP-6251

CacheRegistry is missing entries (e.g. client mappings) following a merge after a cluster split

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      One of the manifestation of the issue:

      1. start 2 nodes with SLSB with TUNNEL transport
      2. start both nodes creating 2 clusters (or partitions)
      3. start ejb client
      4. start GossipRouter and wait for merge
      5. ejb client keeps talking only to known node; never receives a topology update

      This is because org.wildfly.clustering.server.registry.CacheRegistry#topologyChanged does not handle cluster merges and thus all entries from a given partition will be lost forever.

      The effects are especially missing client mappings and broken session stickiness.

              rhn-engineering-rhusar Radoslav Husar
              rhn-engineering-rhusar Radoslav Husar
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