There is a parameter in streaming expressions for this but it is not available for use in every stream source. The search expression should honor it though.
If you pass the <collectionName>.shard=shard1,shard2,shard3... The search stream will honor this. This work was originally done for supporting no-SolrCloud streaming expressions but was not fully realized yet. Joel Bernstein http://joelsolr.blogspot.com/ On Thu, Oct 1, 2020 at 11:31 AM Gael Jourdan-Weil < gael.jourdan-w...@kelkoogroup.com> wrote: > Hello, > > I am trying to use a Streaming Expression to query only a subset of the > shards of a collection. > I expected to be able to use the "shards" parameter like on a regular > query on "/select" for instance but this appear to not work or I don't know > how to do it. > > Is this somehow a feature/restriction of Streaming expressions? > Or am I missing something? > > Note that the Streaming Expression I use is actually using the "/export" > request handler. > > Example of the streaming expression: > curl -X POST -v --data-urlencode > 'expr=search(myCollection,q="*:*",fl="id",sort="id asc",qt="/export")' ' > http://myserver/solr/myCollection/stream' > > Solr version: 8.4 > > Best regards, > Gaël
