[HBASE-3644] HServerAddress Violates Equivalence Relations

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 0.90.2, 0.92.0
• Assignee: Unassigned
• Reporter: Nicolas Spiegelberg
• Created: 15/Mar/11 03:42
• Updated: 12/Jun/22 18:13
• Resolved: 26/Jan/14 22:43

Description

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().

Issue Links

• relates to: HBASE-3387 Pair does not deep check arrays for equality.