Hi all - I've just upgraded my dev install of Solr (cloud) from 4.10 to 5.0. Our client is written in Go, for which I am not aware of a client, so we wrote our own. One tricky bit for this was the routing logic; if a document has routing prefix X and belong to collection Y, we need to know which solr node to connect to. Previously we accomplished this by watching the clusterstate.json file in zookeeper - at startup and whenever it changes, the client parses the file contents to build a routing table.
However in 5.0 newly create collections do not show up in clusterstate.json but instead have their own state.json document. Are there any recommendations for how to handle this from the client? The obvious answer is to watch every collection's state.json document, but we run a lot of collections (~1000 currently, and growing) so I'm concerned about keeping that many watches open at the same time (should I be?). How does the SolrJ client handle this? Thanks! - Ian
