Hey Yujun, Symbolic links involves a number of patches. These patches have a number of dependencies on code in trunk (eg FileContext) so applying to 20.2 would be a lot of work. Symbolic links are in the first release candidate of the 21 release so probably best to check it out if you need symlinks:
http://people.apache.org/~tomwhite/hadoop-0.21.0-candidate-0/ Thanks, Eli On Fri, Jul 16, 2010 at 7:20 AM, Yujun Wu <yu...@phys.ufl.edu> wrote: > Hello, > > I am new to hadoop. Recently, I installed Hadoop 0.20.2 and it works. I > tried to patch it with the symbolic links patch by Eli (Mr. Eli Collins): > > https://issues.apache.org/jira/browse/HDFS-245 > > (symlink41-hdfs.patch) > > I always got the error with missing Hdfs.java. This is what I did: > >>cd $HADOOP_HOME > >>patch -p0 < ../../patches/symlink41-hdfs.patch > > can't find file to patch at input line 5 > Perhaps you used the wrong -p or --strip option? > The text leading up to this was: > -------------------------- > |diff --git src/java/org/apache/hadoop/fs/Hdfs.java > src/java/org/apache/hadoop/fs/Hdfs.java > |index 5d4dd41..905fea7 100644 > |--- src/java/org/apache/hadoop/fs/Hdfs.java > |+++ src/java/org/apache/hadoop/fs/Hdfs.java > -------------------------- > File to patch: > > ------------------------------------------------------- > > Am I missing something here? > > Thanks in advance for any info you give. > > > Regards, > Yujun > > >
