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From: "Dr. Martin Menzel (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-8568) DNS#reverseDns fails on IPv6
 addresses
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    [ https://issues.apache.org/jira/browse/HADOOP-8568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14060386#comment-14060386 ] 

Dr. Martin Menzel commented on HADOOP-8568:
-------------------------------------------

Similar patches are available in both issues

> DNS#reverseDns fails on IPv6 addresses
> --------------------------------------
>
>                 Key: HADOOP-8568
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8568
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Eli Collins
>            Assignee: Tony Kew
>              Labels: newbie
>         Attachments: HADOOP-8568.patch
>
>
> DNS#reverseDns assumes hostIp is a v4 address (4 parts separated by dots), blows up if given a v6 address:
> {noformat}
> 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)
> {noformat}



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