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From "Lars Francke (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8719) Workaround for kerberos-related log errors upon running any hadoop command on OSX
Date Fri, 21 Jul 2017 19:08:01 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16096712#comment-16096712
] 

Lars Francke commented on HADOOP-8719:
--------------------------------------

I know this is old and as [~aw] said the exact code has been revamped. That said I think it'd
be better to warn Mac users that an error message might occur instead of silently overwriting
a property.

This way at least I spent a day trying to figure out why my property was ignored and others
worked.

> Workaround for kerberos-related log errors upon running any hadoop command on OSX
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-8719
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8719
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>    Affects Versions: 2.0.0-alpha
>         Environment: Mac OS X 10.7, Java 1.6.0_26
>            Reporter: Jianbin Wei
>            Assignee: Jianbin Wei
>            Priority: Trivial
>             Fix For: 3.0.0-alpha1
>
>         Attachments: HADOOP-8719.patch, HADOOP-8719.patch, HADOOP-8719.patch, HADOOP-8719.patch
>
>
> When starting Hadoop on OS X 10.7 ("Lion") using start-all.sh, Hadoop logs the following
errors:
> 2011-07-28 11:45:31.469 java[77427:1a03] Unable to load realm info from SCDynamicStore
> Hadoop does seem to function properly despite this.
> The workaround takes only 10 minutes.
> There are numerous discussions about this:
> google "Unable to load realm mapping info from SCDynamicStore" returns 1770 hits.  Each
one has many discussions.  
> Assume each discussion take only 5 minute, a 10-minute fix can save ~150 hours.  This
does not count much search of this issue and its solution/workaround, which can easily hit
(wasted) thousands of hours!!!



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