OTP 24 Compliance - riak_test

[martinsumner]

Currently for testing OTP24, the following works:

• Compile riak current/previous in OTP 24 and rtdev-install.sh;
• Compile riak_test in OTP 22;
• Switch environment to use OTP 24;
• Run riak_test.

Attempts to compile riak_test in OTP 24 initially fail for parse_transform reasons in Riak. Speaking to other Riak users, lager has had to be removed as a pre-requisite for compiling in OTP 24. If riak_test is run from OTP 22, then this fails as building clusters in riak_test hash chceks which fail on:

Loading of rt/riak/current/dev/dev1/riak/lib/riak_core-0.0.0+build.2082.ref2a60e84/ebin/riak_core_ring.beam failed: badfile

i.e. calling riak_core_ring:all_owners(Ring) fails as an OTP 22 run-time tries to use the riak_core_ring module within the OTP 24 compiled riak code.