mirrors_jedisct1/jruby_hdfs

JRuby HDFS¶ ↑

This is an interface to the Hadoop Distributed Filesystem. See hadoop.apache.org/hdfs/ for more information on Hadoop and HDFS in particular.

It uses the Java API thus, only JRuby is supported.

open HDFS file for read (stream will not be closed)

file = File.new(path,"r") # will open a read-only stream in HDFS
puts file.read
file.close

or use with a block (stream will be closed automatically)

File.new("/my/file") do |file|
    puts file.read
end

Install and start Hadoop (at least hdfs) and set HADOOP_HOME environment variable, then run

rake

Please note that the tests will modify your HDFS (add/remove files and paths). You might want to run a separate HDFS just for the tests!

Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
Fork the project
Start a feature/bugfix branch
Commit and push until you are happy with your contribution
Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.