On 5/30/2019 4:13 PM, Venkateswarlu Bommineni wrote:
Thank you guys for quick response.
I was able to query solr by sending 1500 products using solrJ with http
post method.
But I had to change maxBooleanClauses to 4096 from default 1024.
But I wanted to check with you guys that, will there be any performance
issues by changing maxBooleanClauses to 4096.
Please help me here.
Lucene sets the limit to 1024 basically to act as a short-circuit to
protect the system against bugs in user code causing the query engine to
explode by sending thousands of clauses when that wasn't what was intended.
Using a large number of clauses *can* cause performance issues. But if
you need to use them, you need to use them, and in that case you'll need
to increase the limit, and just take the performance hit.
The terms query parser will generally run faster than a large number of
boolean OR clauses, and return the same results. But if your query is
not just OR (also known as SHOULD) clauses, you probably won't be able
to use the terms parser.
https://lucene.apache.org/solr/guide/7_7/other-parsers.html#terms-query-parser
Thanks,
Shawn
