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https://issues.apache.org/jira/browse/JENA-1300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15894027#comment-15894027
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Natan Cox commented on JENA-1300:
---------------------------------
One of the two properties currently (because of migration) returns 0 results
(in our development triple store) and the other one little over 17.000 and
responses are more or less instantaneous. Warmup does not seem to be a problem
because I also already queried the data in separate queries.
I understand I can tweak the query to avoid the problem but I justed wanted to
report the issue because it basically "killed" our Fuseki (running at 100% for
more than an hour). The difference between both queries is just too big to not
be a strange bug IMO.
> Using alternative path in Fuseki runs forever
> ---------------------------------------------
>
> Key: JENA-1300
> URL: https://issues.apache.org/jira/browse/JENA-1300
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki, TDB
> Reporter: Natan Cox
>
> When doing a query with alternative paths like in this example 'isOwnedBy'
> and 'exploitatie' then Fuseki seems to run forever.
> If I remove on of the 2 the response is immediate.
> {code:none}
> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
> PREFIX protontop: <http://www.ontotext.com/protontop#>
> PREFIX milieu: <http://id.milieuinfo.be/def#>
> SELECT (count(*) as ?total)
> WHERE {
> GRAPH <http://id.milieuinfo.be/graph/imjv#id> {
> ?x protontop:isOwnedBy|milieu:exploitatie ?site.
> ?site rdfs:label ?label.
> }
> }
> {code}
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