[
https://issues.apache.org/jira/browse/HDFS-116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12794153#action_12794153
]
Steve Loughran commented on HDFS-116:
-------------------------------------
May be better to have this fail with a meaningful error "we don't know our own
hostname, please fix your underlying system configuration"
> NPE if the system can't determine its own name and you go
> DNS.getDefaultHost(null)
> ----------------------------------------------------------------------------------
>
> Key: HDFS-116
> URL: https://issues.apache.org/jira/browse/HDFS-116
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Minor
>
> In a test case that I am newly writing, on my infamous "home machine with
> broken DNS", I cant call getByName(null) without seeing a stack trace:
> Testcase: testNullInterface took 0.014 sec
> Caused an ERROR
> null
> java.lang.NullPointerException
> at java.net.NetworkInterface.getByName(NetworkInterface.java:226)
> at org.apache.hadoop.net.DNS.getIPs(DNS.java:94)
> at org.apache.hadoop.net.DNS.getHosts(DNS.java:141)
> at org.apache.hadoop.net.DNS.getDefaultHost(DNS.java:218)
> at org.apache.hadoop.net.DNS.getDefaultHost(DNS.java:235)
> at org.apache.hadoop.net.TestDNS.testNullInterface(TestDNS.java:62)
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
