Well, the mention of DIH is a bit off-topic. I'll simplify and say all I need is the ability to set ANY variables in solrconfig.xml without having to make N number of copies of the same configuration to achieve that. Essentially I need 10+ collections to use the exact same config dir in Zookeeper with minor/trivial differences set in variables.
Your proposal of taking in values at core creation-time is a neat one and would be a very flexible solution for a lot of use cases. My only concern for my really-specific use cae is that I'd be setting DB user/passwords via plain-text HTTP calls, but having this feature is better than not. In a perfect world I'd like to be able to include files in Zookeeper (like XInclude) that are outside the common config dir (eg: '/configs/sharedconfig') all the collections would be sharing. On the other hand, that sort of solution would open up the Zookeeper layout to arbitrary files and could end up in a nightmare if not done carefully, however. Would it be possible for Solr to support specifying multiple configs at collection creation, that are merged or concatenated. This idea sounds terrible to me even at this moment, but I wonder if there is something in there.. Tim
