HBase currently relies on an older version of JRuby (1.6.8) that we redistribute via the jruby-complete jar made by that project.
While cleaning up our license notifications (
HBASE-14085) I've been verifying that we have any supplemental licensing info from included dependencies (that is, stuff beyond the license listed in a pom).
The overall licensing for JRuby is CPL 1.0 and it mentions bundling some other works under a combination of licenses that are all categorized as various degrees of fine for inclusion by an ASF project (ref jruby 1.6.8 COPYING information).
It also includes the ruby language files from MRI ruby 1.8 and 1.9 under "The Ruby License" (ref jruby 1.6.8 LICENSE.RUBY details and referenced no-op LEGAL). These files are needed for jruby to function, so I can't e.g. excise them from the version we redistribute.
The legal FAQ mentions that it's okay for ruby-implemented projects to have dependencies that are under the Ruby License, but it doesn't categorize the license generally or state if it's okay to redistribute.
Can we redistribute this jar?