It's not really a service at all, it is a in-memory data format intended to be shareable between processes. The project also includes libraries for C++, Java an

It's not really a service at all, it is a in-memory data format intended to be shareable between processes. The project also includes libraries for C++, Java and Python. This post explains the intention better than the project webpage: http://blog.cloudera.com/blog/2016/02/introducing-apache-arrow-a-fast-interoperable-in-memory-columnar-data-structure-standard/ http://blog.cloudera.com/blog/2016/02/introducing-apache-arr...