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From "Peter N. Steinmetz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6614) RunJar should provide more diags when it can't create a temp file
Date Fri, 01 Jul 2011 06:10:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13058225#comment-13058225
] 

Peter N. Steinmetz commented on HADOOP-6614:
--------------------------------------------

I don't personally think this should be minor, as I just spent an hour trying to figure this
out. Would be good if there was a message pointing to the problem. It is easy to fix once
you know what directory to look for.

> RunJar should provide more diags when it can't create a temp file
> -----------------------------------------------------------------
>
>                 Key: HADOOP-6614
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6614
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: util
>    Affects Versions: 0.22.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> When you see a stack trace about permissions, it is better if the trace included the
file/directory at fault:
> {code}
> Exception in thread "main" java.io.IOException: Permission denied
> 	at java.io.UnixFileSystem.createFileExclusively(Native Method)
> 	at java.io.File.checkAndCreate(File.java:1704)
> 	at java.io.File.createTempFile(File.java:1792)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:147)
> {code}
> As it is, you need to go into the code, discover that it's {{${hadoop.tmp.dir}/hadoop-unjar}},
but you need to know the value of hadoop.tmp.dir to really find out what the problem is.

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