chmod is used on linux to change the file permissions. It seems like hadoop links your on linux. 

What command are you running to get this error ? 

Aaron

On 2 Dec 2010, at 21:03, Bingbing Liu wrote:

i use the same configuration in eclispe both on windows and linux , on linux ,it goes well, but on windows , it fails
 
here is the exception information:
 
 
10/12/02 10:53:40 INFO mapreduce.MRSelect: output reducer type: filesystem
10/12/02 10:53:40 INFO jvm.JvmMetrics: Initializing JVM Metrics with processName=JobTracker, sessionId=
Exception in thread "main" java.io.IOException: Cannot run program "chmod": CreateProcess error=2, ϵͳÕҲ»µ½ָ¶
at java.lang.ProcessBuilder.start(Unknown Source)
at org.apache.hadoop.util.Shell.runCommand(Shell.java:149)
at org.apache.hadoop.util.Shell.run(Shell.java:134)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:286)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:354)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:337)
at org.apache.hadoop.fs.RawLocalFileSystem.execCommand(RawLocalFileSystem.java:481)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:473)
at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:280)
at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:261)
at org.apache.hadoop.mapred.JobClient.configureCommandLineOptions(JobClient.java:573)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:761)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:432)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:447)
at org.clouddb.cassandra.mapreduce.MRSelect.run(MRSelect.java:209)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.clouddb.cassandra.mapreduce.MRSelect.main(MRSelect.java:54)
Caused by: java.io.IOException: CreateProcess error=2, ϵͳÕҲ»µ½ָ¶
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 17 more
 
2010-12-02

Bingbing Liu

发件人: Jeremy Hanna
发送时间: 2010-12-02  11:13:04
收件人: user
抄送:
主题: Re: how can i ran the word count example on windows?
There isn't currently, but perhaps you could contribute one :).  If you take a look at the sh script in the bin directory of the word count example, it shouldn't be terribly difficult to mimic the behavior.  It's mostly just setting up the classpath and executing the Java class with some arguments.
 
On Dec 1, 2010, at 8:26 PM, Bingbing Liu wrote:

i don't know how to set the command line
 
is there a word_count.bat ? like the word_count in the bin on linux?
 
2010-12-02

Bingbing Liu