Thanks a lot for the clarification. I created a Jira ticket not to lose track 
of this:
https://issues.apache.org/jira/browse/SOLR-12510


> On 21 Jun 2018, at 20:53, Joel Bernstein <joels...@gmail.com> wrote:
> 
> That is actually the current behavior of the search expression. The initial
> use cases from Streaming Expressions revolved around joins and rollups
> which really require the entire result set. So the search expression just
> merged the results from the shards and let the wrapping expression deal
> with the results. Things have evolved quite a bit since then and having the
> search expression respect the rows parameter is something that I've been
> meaning to add. Feel free to create a ticket for this.
> 
> Joel Bernstein
> http://joelsolr.blogspot.com/
> 
> On Thu, Jun 21, 2018 at 1:35 PM, Alfonso Muñoz-Pomer Fuentes <
> amu...@ebi.ac.uk> wrote:
> 
>> I’m having a weird issue with the search streaming expressions and I’d
>> like to share it before opening a ticket in Jira, just in case I’m missing
>> something obvious.
>> 
>> I’m currently on Solr 7.1 and I have a collection named bioentities split
>> into two shards and no replicas. Whenever I run a query such as this:
>> search(
>>  bioentities,
>>  q="*:*",
>>  fl="bioentity_identifier,property_value,property_name",
>>  sort="bioentity_identifier asc")
>> 
>> I’m getting 20 documents. If I add e.g. rows=4 I get 8 results, and so on.
>> 
>> I have the same collection in another SolrCloud cluster, split into three
>> shards and running the same queries I get 30 and 12 results, respectively.
>> So it seems that the seach expression distributes the query between shards
>> and then aggregates the results. Is this the expected behaviour?
>> 
>> Thanks in advance.
>> 
>> --
>> Alfonso Muñoz-Pomer Fuentes
>> Senior Lead Software Engineer @ Expression Atlas Team
>> European Bioinformatics Institute (EMBL-EBI)
>> European Molecular Biology Laboratory
>> Tel:+ 44 (0) 1223 49 2633
>> Skype: amunozpomer
>> 
>> 

--
Alfonso Muñoz-Pomer Fuentes
Senior Lead Software Engineer @ Expression Atlas Team
European Bioinformatics Institute (EMBL-EBI)
European Molecular Biology Laboratory
Tel:+ 44 (0) 1223 49 2633
Skype: amunozpomer

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