Concept info query is slow with Jena 3.1.1 / Fuseki 1.4.1 / 2.4.1

[osma]

At which URL did you encounter the problem?

http://localhost/Skosmos/yso/fi/search?clang=fi&q=kissael

What steps will reproduce the problem?

1. Use Skosmos with Fuseki 1.4.1-SNAPSHOT
2. Search for something and wait for the search result page

What is the expected output? What do you see instead?

Expected to get a search result page.
The page takes a long time to load and eventually displays an error due to timeout.
Fuseki uses a lot of CPU for a long time.

The query for looking up additional information about concepts takes a lot longer than it used to with Jena 3.1.0.

I reported the issue on the Jena users list: http://mail-archives.apache.org/mod_mbox/jena-users/201611.mbox/%3C58185A49.7060100%40helsinki.fi%3E

It seems that this can easily be fixed by moving the VALUES block to the top of the query.

[osma]

It turns out it's not that simple. Moving the VALUES block doesn't help. See the discussion on the Jena users list.

[osma]

It's possible that the previous commit fixed the issue, but it needs further testing

[osma]

Nope, it didn't solve all the issues. Needs further testing.

[osma]

Actually this seems to be working fine. The problem was that we got some requests from older Skosmos versions to our SPARQL endpoint that slowed it down considerably.