I am unable to get even simple graph traversal expressions like the one
below to work in my environment (7.4 and 7.5 versions). They simply yield
no results, even though I know the data exists.
curl --data-urlencode 'expr=gatherNodes(rec_coll,

walk="35d40c4b9d6ddfsdf45cbb0fe4aesd75->USER_ID",
                                        gather="ITEM_ID")'
http://localhost:8983/solr/rec_coll/graph

Can someone help?

thanks
Vidhya