problems running simple map-reduce hadoop examples in cygwin

Question

I am just trying to get Hadoop running on my laptop running 64-bit Windows 7 in standalone mode. I\'ve installed Cygwin 1.7 in the default folder (c:\\cygwin). I have the late

Answer 1

Here is a simple-to-use workaround that doesn't require any yak shaving:

https://github.com/congainc/patch-hadoop_7682-1.0.x-win

Answer 2

fixed (major yak shaving)

https://issues.apache.org/jira/browse/HADOOP-7682?focusedCommentId=13236645#comment-13236645

Answer 3

I've managed to get this working to the point where jobs are dispatched, tasks executed, and results compiled.

• [http://en.wikisource.org/wiki/User:Fkorning/Code/Haddoop-on-Cygwin]

However we still need to get the servlets to understand cygwin symlinks. I have no idea how to do this in Jetty.

These two links show how to allow Tomcat and jetty to follow symlinks, but I don't know if this works in cygwin. * http://www.lamoree.com/machblog/index.cfm?event=showEntry&entryId=A2F0ED76-A500-41A6-A1DFDE0D1996F925 * Configure Symlinks for single directory in Tomcat

Otherwise we'll have to open up the jetty code and replace java.io.File with org.apache.hadoop.fs.LinkedFile.