Oh nice! That looks close to what we were trying to do with this plugin. I'm not sure it would've worked within the constraints of the Elasticsearch environment

Oh nice! That looks close to what we were trying to do with this plugin. I'm not sure it would've worked within the constraints of the Elasticsearch environment, but the additional confidence of finding a solution that optaplanner provides by using multiple algorithms to solve the bin-packing problem (NP-Hard) looks quite promising.