I can't speak to why you're seeing a performance change between 6.x
and 8.x. What I can suggest though is an alternative way of
formulating the query: you might get different performance if you run
your query using Solr's "terms" query parser:https://lucene.apache.org/solr/guide/8_5/other-parsers.html#terms-query-parser
It's not guaranteed to help, but there's a chance it'll work for you.
And knowing whether or not it helps might point others here towards
the cause of your slowdown.
Even if "terms" performs better for you, it's probably worth
understanding what's going on here of course.
Are all other queries running comparably?
On Thu, May 21, 2020 at 10:25 AM jay harkhani <[EMAIL PROTECTED]> wrote: