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https://issues.apache.org/jira/browse/HADOOP-8938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478084#comment-13478084
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Steve Loughran commented on HADOOP-8938:
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@Daryn -that and bash -v ... they do require understanding of bash though.
> add option to do better diags of startup configuration
> ------------------------------------------------------
>
> Key: HADOOP-8938
> URL: https://issues.apache.org/jira/browse/HADOOP-8938
> Project: Hadoop Common
> Issue Type: New Feature
> Components: bin
> Affects Versions: 1.1.0, 2.0.2-alpha
> Reporter: Steve Loughran
> Priority: Minor
> Attachments: hdiag.py
>
>
> HADOOP-8931 shows a symptom of a larger problem: we need better diagnostics
> of what all the environment variables and settings going through the hadoop
> scripts to find out why something isn't working.
> Ideally some command line parameter to the scripts (or even: a new
> environment variable) could trigger more display of critical parameters.
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