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https://issues.apache.org/jira/browse/HADOOP-864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12462970
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Owen O'Malley commented on HADOOP-864:
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The File interface is problematic to use with the boolean return codes,
however, the better way to structure the calls is with:
tmpDir.mkdirs();
if (!tmpDir.exists()) { ... }
since that way, if two threads/processes both try to create the directory they
both succeed.
> bin/hadoop jar throws file creation exception for temp files
> ------------------------------------------------------------
>
> Key: HADOOP-864
> URL: https://issues.apache.org/jira/browse/HADOOP-864
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Reporter: Sanjay Dahiya
> Assigned To: Sanjay Dahiya
> Priority: Minor
> Attachments: Hadoop-864.patch
>
>
> bin/hadoop throw file creation exception if hadoop.tmp.dir doesn't exist.
> $ bin/hadoop jar build/hadoop-streaming.jar
> Exception in thread "main" java.io.IOException: No such file or directory
> at java.io.UnixFileSystem.createFileExclusively(Native Method)
> at java.io.File.checkAndCreate(File.java:1345)
> at java.io.File.createTempFile(File.java:1434)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:109)
> it should create the hadoop.tmp.dir before trying File.createTempFile
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