Error installing hadoop with homebrew

问题

I'm trying to get hadoop setup locally on my Mac, but am getting the following error when trying to brew install hadoop:

$ brew install hadoop
==> Downloading http://www.apache.org/dyn/closer.cgi?path=hadoop/core/hadoop-1.1.2/hadoop-1.1.2.tar.gz
==> Best Mirror http://apache.mirrors.pair.com/hadoop/core/hadoop-1.1.2/hadoop-1.1.2.tar.gz

curl: (22) The requested URL returned error: 404
Error: Download failed: http://www.apache.org/dyn/closer.cgi?path=hadoop/core/hadoop-1.1.2/hadoop-1.1.2.tar.gz

Any ideas what I should do?

回答1:

It seems that Homebrew formula for Hadoop is outdated, it points to 1.1.2 instead of 1.2.1. Until the guys from Homebrew fix the bug you can do the following steps in order to install Hadoop 1.1.2:

1. Download manually version 1.1.2 from http://archive.apache.org/dist/hadoop/core/hadoop-1.1.2/hadoop-1.1.2.tar.gz to any folder in your computer
2. Then move the file hadoop-1.1.2.tar.gz to homebrew's temporary folder, if you have not changed it before, it should be located in /Library/Caches/Homebrew

3. Finally you can install Hadoop using Homebrew, now brew will find that the file has already been downloaded and will proceed with installation as follows:

   $ brew install hadoop
   ==> Downloading http://www.apache.org/dyn/closer.cgi?path=hadoop/core/hadoop-1.1.2/hadoop-1.1.2.tar.
   Already downloaded: /Library/Caches/Homebrew/hadoop-1.1.2.tar.gz
   ==> Caveats
   In Hadoop's config file:
     /usr/local/Cellar/hadoop/1.1.2/libexec/conf/hadoop-env.sh
   $JAVA_HOME has been set to be the output of:
     /usr/libexec/java_home
   ==> Summary
     /usr/local/Cellar/hadoop/1.1.2: 271 files, 78M, built in 2 seconds
   

回答2:

You have to do a brew update first. It was pointing to the wrong version, but that seems to be fixed now.

来源：https://stackoverflow.com/questions/18240963/error-installing-hadoop-with-homebrew