Eric Shu created GEODE-10242:
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             Summary: Same tail key can be generated for different events on 
(different colocated regions) from different servers
                 Key: GEODE-10242
                 URL: https://issues.apache.org/jira/browse/GEODE-10242
             Project: Geode
          Issue Type: Bug
          Components: wan
            Reporter: Eric Shu


For colocated partition regions with parallel wan queue, rebalance could cause 
primary to be moved. This can lead to a case that one server has the primary 
bucket for the parent region, but another has the primary bucket for the child 
region. As colocated regions show the same parallel wan queue, both server will 
generate next tail key for different events. This will cause some event not 
dispatched to the other wan site and thus event lost.



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