Red Parquet is the Ruby bindings of Apache Parquet. Red Parquet is based on GObject Introspection.
Apache Parquet is a columnar storage format.
GObject Introspection is a middleware for language bindings of C library. GObject Introspection can generate language bindings automatically at runtime.
Red Parquet uses Apache Parquet GLib and gobject-introspection gem to generate Ruby bindings of Apache Parquet.
Apache Parquet GLib is a C wrapper for Apache Parquet C++. GObject Introspection can't use Apache Parquet C++ directly. Apache Parquet GLib is a bridge between Apache Parquet C++ and GObject Introspection.
gobject-introspection gem is a Ruby bindings of GObject Introspection. Red Parquet uses GObject Introspection via gobject-introspection gem.
Install Apache Parquet GLib before install Red Parquet. See Apache Arrow install document for details.
Install Red Parquet after you install Apache Parquet GLib:
% gem install red-parquet
require "parquet" table = Arrow::Table.load("/dev/shm/data.parquet") # Process data in table table.save("/dev/shm/data-processed.parquet")