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https://issues.apache.org/jira/browse/HADOOP-6614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12841999#action_12841999
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Steve Loughran commented on HADOOP-6614:
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Easily done, I can even think of a test for it, though if the runner calls
System.exit it may be tricky
> 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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