Revert hebkhan-dev back to production

This reverts commit a9120b73decef067b7190e056e0ba80281215472.
fix the fix of mapreduce
Revert "generate default topics and version"

This fix was incomplete and caused issues in production. Will reimplement
together with an initial data population feature

This reverts commit b6214849deb1bef16d71fc8092d16542c6218552.