[infinispan-issues] [JBoss JIRA] (ISPN-2918) TopologyAwareConsistentHashFactory doesn't distribute data to nodes evenly

[Dan Berindei (JIRA)]

Dan Berindei created ISPN-2918:
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             Summary: TopologyAwareConsistentHashFactory doesn't distribute data to nodes evenly
                 Key: ISPN-2918
                 URL: https://issues.jboss.org/browse/ISPN-2918
             Project: Infinispan
          Issue Type: Bug
          Components: Distributed Cache
    Affects Versions: 5.2.4.Final
            Reporter: Dan Berindei
            Assignee: Dan Berindei
            Priority: Critical
             Fix For: 5.3.0.Alpha1


When the topology of a cluster is "balanced" (i.e. all sites have the same number of racks, racks have the same number of machines, machines have the same number of nodes), the number of segments owned by each node should be approximately the same.

The current algorithm properly balances the primary owners of the segments, but the backup owners are not balanced, so a node can end up owning a lot more segments than expected.

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