Question

I have problem setting up JAVA_HOME correctly for Hadoop on OS X 10.7
Here is what I have done:
went to /usr/local/Cellar/hadoop/1.0.3/libexec/conf/hadoop-env.sh and changed JAVA_HOME form whatever it was there for default to export JAVA_HOME=/Library/Java/Home/
I am also pretty new to Java too, so even JAVA_HOME might be wrong too .
So by going to bin folder of hadoop and running this command: hadoop jar hadoop-*-examples.jar
This is the nasty error I get:

Exception in thread "main" java.io.IOException: Error opening job jar: hadoop-*-examples.jar
    at org.apache.hadoop.util.RunJar.main(RunJar.java:90)
Caused by: java.util.zip.ZipException: error in opening zip file
    at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:127)
    at java.util.jar.JarFile.<init>(JarFile.java:135)
    at java.util.jar.JarFile.<init>(JarFile.java:72)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:88)

Do you have any idea how can I fix this or what is the problem?
this is also the output of “which javac” commnad in case you need it: /usr/bin/javac

Thanks

Answer 1

I must have gone to the “libexec” folder and then ran that command.