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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9593) stack trace printed at ERROR for all yarn clients without hadoop.home set
Date Thu, 23 May 2013 18:21:23 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-9593:
-----------------------------------

    Status: Patch Available  (was: Open)

this is a small patch, but I think the UX will be better. I've seen this twice in programs,
and I'm used to grabbing the first stack trace as the root cause -this is diverting me from
doing that. We will be seeing a lot of JIRAs containing this stack if we don't fix it
                
> stack trace printed at ERROR for all yarn clients without hadoop.home set
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-9593
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9593
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>         Attachments: HADOOP-9593-001.patch
>
>
> This is the problem of HADOOP-9482 now showing up in a different application -one whose
log4j settings haven't turned off all Shell logging.
> Unless you do that, all yarn clients will have a stack trace at error in their logs,
which is generating false alarms and is utterly pointless. Why does this merit a stack trace?
Why log it at error? It's not an error for a client app to not have these values set as long
as they have the relevant JARs on their classpath. And if they don't, they'll get some classpath
error instead

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