Forgot:
- size of result for each triple pattern? Might affect if hash join can
be used.
- your hardware?
- is it just the first query after starting Fuseki? Connections have
been closed? Note, there was also a bug in a recent Jena version, but
only with TDB and too many open connections. It has been resolved with
release 4.6.1.
Might not be related, but I'm mentioning all things here nevertheless.
On 15.09.22 11:16, Mikael Pesonen wrote:
This returns one row fast, say :C1
SELECT *
FROM <https://a.b.c>
WHERE {
<https://x.y.z> a ?t .
#?t skos:prefLabel ?l
}
and this too:
SELECT *
FROM <https://a.b.c>
WHERE {
#<https://x.y.z> a ?t .
:C1 skos:prefLabel ?l
}
But this always hangs until timeout
SELECT *
FROM <https://a.b.c>
WHERE {
<https://x.y.z> a ?t .
?t skos:prefLabel ?l
}
What am I missing here? I'm using Fuseki web GUI. Thanks!
