HTTP QueryExecution has been closed

[Martynas Jusevičius]

Hi,

I'm trying to understand in which circumstances can the following code

        try (QueryExecution qex = QueryExecution.create(getQuery(), rowModel))
        {
            return qex.execConstructDataset();
        }

throw the "HTTP QueryExecution has been closed" exception?
Full code here:
https://github.com/AtomGraph/LinkedDataHub/blob/rf-direct-graph-ids-only/src/main/java/com/atomgraph/linkeddatahub/imports/stream/csv/CSVGraphStoreRowProcessor.java#L141

The execution is not even happening over HTTP? Is it somehow closed prematurely?

I can see the exception being thrown in QueryExecDataset::constructQuads:
https://github.com/apache/jena/blob/main/jena-arq/src/main/java/org/apache/jena/sparql/exec/QueryExecDataset.java#L211

Martynas