Greetings. A follow-up to the below with my findings.
The problem seems to be that the binding of “concat” on the StreamFactory.functionNames maps to ConcatEvaluator in 8.4.1, while in 8.2 it mapped to ConcatOperation. The mapping is defined in the file Lang.java Branch_8_4: Branch_8_2: The workaround to achieve a functioning move from 8.2 to 8.4.1, in our case, was to override the mapping of concat in the solrconfig.xml with <expressible name="concat" class=“org.apache.solr.client.solrj.io.ops.ConcatOperation” /> Kind regards, Guilherme Nunes > On 20 Jan 2020, at 11:38, Guilherme Nunes <guilherme.nu...@biologis.com> > wrote: > > Greetings. > > In upgrading to solr 8.4.1, the following streaming expression is not working > for me: > > select( > cartesianProduct( > tuple(k1="1", k2=array(a)), > k2, productSort="k1 asc"), > "k1”, > concat(fields="k1",delim=",",as="node") ) > > Returning “"Invalid expression > select(cartesianProduct(tuple(k1=1,k2=array(a)),k2,productSort=\”k1 > asc\"),\"k1\",concat(fields=k1,delim=\",\",as=node)) - unknown operands > found"”. > > But it works fine in 8.2.0. > > Am I missing something, or should a jira ticket be opened for this? > > Thank you > > Kind regards, > Guilherme Nunes
