> However, the Solr instance we direct our client query to is consuming > significantly more RAM (10GB) and is still failing after a few queries when > it runs out of heap space. This is presumably due to the role it plays, > aggregating the results from each shard.
That seems quite odd... What facet parameters are you using in the query? I could imagine memory issues if you're using facet.limit=-1, or some very large number. -Michael