Resolution: Information Provided
IDE : Eclipse Photon Release (4.8.0)
It occurs in multiple environments.
Issuing a DELETE with 10+ WHERE clauses has a lot of execution latency.
Reproduction Route :
1. Insert a small amount of data (~ 50 Statements)
2. Issue a DELETE with ~ 15 clauses.
The execution of DELETE has extraordinary large latency and RAM.
Example of DELETE Query used:
In org.apache.jena.sparql.modify package UpdateProcessorBase.java function execute()
"Iter.sendToSink(request.iterator(), sink);" seems to be the cause.
With 50 Statements in JENA and above DELETE Query it takes ~ 112 seconds.