I think the problem was that my streaming expression was always returning just one node. When I added more data so that I can have more than one node, I started seeing the result.
On Mon, Jul 1, 2019 at 11:21 AM Pratik Patel <pra...@semandex.net> wrote: > Hello Everyone, > > I am trying to execute following streaming expression with "scoreNodes" > function in it. This is taken from the documentation. > > scoreNodes(top(n="50", > sort="count(*) desc", > nodes(baskets, > random(baskets, q="productID:ABC", fl="basketID", > rows="500"), > walk="basketID->basketID", > fq="-productID:ABC", > gather="productID", > count(*)))) > > I have ensured that I have the collection and data present for it. > Upon executing this, I am getting an error message as follows. > > "No collection param specified on request and no default collection has > been set: []" > > Upon digging into the source code I found that there is a possible bug in > ScoreNodesStream.java > > StringBuilder instance is never appended any string and the block which > initializes collection, needs the length of that instance to be more than > zero. This condition will always be false and hence the collection will > never be set. > > I checked this file in solr version 8.1 and that also has the same issue. > Is there any JIRA open for this or any patch available? > > [image: image.png] > > Thanks, > Pratik >
