Maybe a better implementation of ruby binding for Apache Spark

[chyh1990]

Hi,

I have written a new prototype for ruby spark binding

https://github.com/chyh1990/jruby-spark

Although this implementation only works on JRuby, I think this approach is more promising:

• REAL closure/lambda serialization, with elegant syntax

https://github.com/chyh1990/jruby-spark/blob/master/examples/pagerank.rb

• use JVM infrastructure, run on YARN with the standard job submission workflow
• reuse Java/Scala API, we can get Streaming/SQL/GraphX support nearly for free

https://github.com/chyh1990/jruby-spark/blob/master/examples/sqltest.rb

• Easier to maintain even without merging into mainline spark

The prototype is preliminary, but the concept is proved. I think ruby would be a
more elegant binding language for spark than python. I'm looking forward for more
participants!

[ondra-m]

Do you have some install guide?

I tried rake package but go:

jruby-spark/src/main/scala/org/apache/spark/jruby/JRubyIteratableAdaptor.scala:6: error: object jruby is not a member of package org
...

[gnilrets]

It's unfortunate that @chyh1990 is not very responsive right now, but I was able to get a spark session going after doing a few extra things - chyh1990/jruby-spark#1