HServerAddress Violates Equivalence Relations
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                 Key: HBASE-3644
                 URL: https://issues.apache.org/jira/browse/HBASE-3644
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.90.2, 0.92.0
            Reporter: Nicolas Spiegelberg
            Assignee: Nicolas Spiegelberg
             Fix For: 0.90.2, 0.92.0


See HBASE-3387 or 
http://www.ibm.com/developerworks/java/library/j-jtp05273.html#N10184 .  
Basically, 'a' denotes HServerAddress(DNS) & 'b' denotes 
HServerAddress(nslookup(DNS)).  This is extremely common within HBase when 
'conf/regionserver' contains DNS entries because ClusterStatus.getServers() is 
IP-based. You have a.address.equals(b.address) && 
!a.stringValue.equals(b.stringValue).  In this case, a.equals(b) while 
a.hashCode() != b.hashCode().  

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