Hi, I've been experimenting with various sharding strategies with Solr cloud (6.5.1), and am seeing some odd behavior when using the implicit router. I am probably either doing something wrong or misinterpreting what I am seeing in the logs, but if someone could help clarify that would be awesome.
I created a collection using the implicit router, created 10 shards, named shard1, shard2, etc. I indexed 3000 documents to each shard, routed by setting the _route_ field on the documents in my schema. All works fine, I verified there are 3000 documents in each shard. The odd behavior I am seeing is when I try to route a query to a specific shard. I submitted a simple query to shard1 using the request parameter _route_=shard1. The query comes back fine, but when I looked in the logs, it looked like it was issuing 3 separate requests: 1. The original query to shard1 2. A 2nd query to shard1 with the parameter ids=a bunch of document ids 3. The original query to a random shard (changes every time I run the query) It looks like the first query is getting back a list of ids, and the 2nd query is retrieving the documents for those ids? I assume this is some solr cloud implementation detail. What I don't understand is the 3rd query. Why is it issuing the original query to a random shard every time, when I am specifying the _route_? The _route_ parameter is definitely doing something, because if I remove it, it is querying all shards (which I would expect). Any ideas? I can provide the actual queries from the logs if required. Thanks, Chris
