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https://issues.apache.org/jira/browse/HADOOP-9888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15353099#comment-15353099
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Hudson commented on HADOOP-9888:
--------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #10027 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/10027/])
HADOOP-9888. KerberosName static initialization gets default realm, (aw: rev
be38e530bb23b134758e29c9101f98cf4e1d2c38)
*
hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/KerberosName.java
> KerberosName static initialization gets default realm, which is unneeded in
> non-secure deployment.
> --------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9888
> URL: https://issues.apache.org/jira/browse/HADOOP-9888
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.1.1-beta, 3.0.0-alpha1
> Reporter: Chris Nauroth
> Assignee: Dmytro Kabakchei
> Fix For: 3.0.0-alpha1
>
> Attachments: HADOOP-9888.001.patch
>
>
> {{KerberosName}} has a static initialization block that looks up the default
> realm. Running with Oracle JDK7, this code path triggers a DNS query. In
> some environments, we've seen this DNS query block and time out after 30
> seconds. This is part of static initialization, and the class is referenced
> from {{UserGroupInformation#initialize}}, so every daemon and every shell
> command experiences this delay. This occurs even for non-secure deployments,
> which don't need the default realm.
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