[jira] [Commented] (HADOOP-8719) Workaround for kerberos-related log errors upon running any hadoop command on OSX

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-8719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129039#comment-14129039 ] 

Allen Wittenauer commented on HADOOP-8719:
------------------------------------------

Howdy. Verifying that what is said to be fixed in 3.x is actually fixed in 3.x and not in 2.x .  In that process, I read this comment:

bq. Looks like this patch makes it impossible to debug a secured cluster in Mac OS X.

This is incorrect. *-env.sh is meant to be edited by the user.  Therefore, a user running security on OS X is expected to remove those bits from the *-env.sh files.  Since the time that this patch was committed, HADOOP-9902 has reworked this code:

a) Fixed support for Mavericks
b) Made the change in one place and not two
c) Put a comment above the code that specifically says that users running security should remove it.

> 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
>    Affects Versions: 2.0.0-alpha
>         Environment: Mac OS X 10.7, Java 1.6.0_26
>            Reporter: Jianbin Wei
>            Priority: Trivial
>             Fix For: 3.0.0
>
>         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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