You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2016/06/28 14:23:57 UTC
[jira] [Updated] (HADOOP-9888) KerberosName static initialization
gets default realm, which is unneeded in non-secure deployment.
[ https://issues.apache.org/jira/browse/HADOOP-9888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Allen Wittenauer updated HADOOP-9888:
-------------------------------------
Resolution: Fixed
Fix Version/s: 3.0.0-alpha1
Target Version/s: (was: )
Status: Resolved (was: Patch Available)
+1 committed to trunk.
Thanks!
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org