[HADOOP-8568] DNS#reverseDns fails on IPv6 addresses

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.0.0-alpha
• Labels: newbie
• Target Version/s: 2.0.2-alpha
• Assignee: Tony Kew
• Reporter: Eli Collins
• Created: 06/Jul/12 00:39
• Updated: 18/Jul/14 17:03
• Resolved: 18/Jul/14 17:03

Description

DNS#reverseDns assumes hostIp is a v4 address (4 parts separated by dots), blows up if given a v6 address:

Caused by: java.lang.ArrayIndexOutOfBoundsException: 3
        at org.apache.hadoop.net.DNS.reverseDns(DNS.java:79)
        at org.apache.hadoop.net.DNS.getHosts(DNS.java:237)
        at org.apache.hadoop.net.DNS.getDefaultHost(DNS.java:340)
        at org.apache.hadoop.net.DNS.getDefaultHost(DNS.java:358)
        at org.apache.hadoop.net.DNS.getDefaultHost(DNS.java:337)
        at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:235)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:1649)

Issue Links

• is duplicated by: HADOOP-3619 DNS.getHosts triggers an ArrayIndexOutOfBoundsException in reverseDNS if one of the interfaces is IPv6
• is related to: HADOOP-3619 DNS.getHosts triggers an ArrayIndexOutOfBoundsException in reverseDNS if one of the interfaces is IPv6