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From "Prem Raj (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1792) df command doesn't exist under windows
Date Thu, 28 Feb 2008 01:32:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573125#action_12573125
] 

Prem Raj commented on HADOOP-1792:
----------------------------------

I had this problem and the comments here were not very clear. I solved it by trying various
things...so here is how I got it to work:

My environment:
- Windows XP
- Eclipse running under Windows
- Eclipse includes the IBM plugin for mapreduce/hadoop
- I was trying to run the mapreduce job as a java application via Eclipse

Solution:
- Installed the latest stable version of Cygwin
- Added "c:\Cygwin\bin " (or equivalent) to Path on windows
- Started the Cygwin shell
- Ran the mapreduce job as a java application while the Cygwin shell was running.

Hope this helps clarify things for other newbies.

> df command doesn't exist under windows
> --------------------------------------
>
>                 Key: HADOOP-1792
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1792
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.14.0
>            Reporter: Benjamin Francisoud
>            Assignee: Mahadev konar
>             Fix For: 0.15.0
>
>
> My code use to work with previous version of hadoop, I upgraded to 0.14 and now:
> java.io.IOException: CreateProcess: df -k "C:\Documents and Settings\Benjamin\Local Settings\Temp\test14906test\mapredLocal"
error=2
> 	at java.lang.ProcessImpl.create(Native Method)
> 	at java.lang.ProcessImpl.<init>(Unknown Source)
> 	at java.lang.ProcessImpl.start(Unknown Source)
> 	at java.lang.ProcessBuilder.start(Unknown Source)
> 	at java.lang.Runtime.exec(Unknown Source)
> 	at java.lang.Runtime.exec(Unknown Source)
> 	at org.apache.hadoop.fs.DF.doDF(DF.java:60)
> 	at org.apache.hadoop.fs.DF.<init>(DF.java:53)
> 	at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.confChanged(LocalDirAllocator.java:198)
> 	at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:235)
> 	at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:124)
> 	at org.apache.hadoop.mapred.MapOutputFile.getSpillFileForWrite(MapOutputFile.java:88)
> 	at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpillToDisk(MapTask.java:373)
> 	at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:593)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:190)
> 	at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:137)
> 	at org.apache.hadoop.mapred.LocalJobRunner.submitJob(LocalJobRunner.java:283)
> 	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:397)
> ...

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