¡resource not found! #164
Description
Hello,
I have recently found that in many of our SPARQL requests, 4store return values that look like this ¡resource dad5d4cb7c7b9e5e not found! instead of the correct value.
To reproduce
4s-backend-destroy ontoportal_kb
4s-backend-setup --segments 4 ontoportal_kb
4s-backend ontoportal_kb
4s-update ontoportal_kb "DELETE {?s ?p ?o } WHERE { ?s ?p ?o}" #clear the triple store
4s-update ontoportal_kb "INSERT DATA {
GRAPH <http://goo.org/default/Project> {
<http://goo.org/default/project/Goo> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://goo.org/default/Project> .
<http://goo.org/default/project/Goo> <http://goo.org/default/name> \"Goo\" .
}
}" # insert a project
4s-query ontoportal_kb "SELECT DISTINCT ?id ?attributeProperty ?attributeObject ?inverseAttributeObject
FROM <http://goo.org/default/Project>
FROM <http://goo.org/default/Task>
WHERE {
?id a <http://goo.org/default/Project> .
OPTIONAL { ?id ?attributeProperty ?attributeObject . }
OPTIONAL { ?inverseAttributeObject ?attributeProperty ?id . }
FILTER(?attributeProperty = <http://goo.org/default/project> || ?attributeProperty = <http://goo.org/default/name>)
}" # list the projects with their tasks (inverse attribute)
What we should have as a result
| id | attributeProperty | attributeObject | inverseAttributeObject |
|---|---|---|---|
| http://goo.org/default/project/Goo | http://goo.org/default/name | Goo |
What we actually have
| id | attributeProperty | attributeObject | inverseAttributeObject |
|---|---|---|---|
| http://goo.org/default/project/Goo | ¡resource dad5d4cb7c7b9e5e not found! | ||
| http://goo.org/default/project/Goo | http://goo.org/default/name | Goo |
And in the logs we have the following
➜ 4store-original git:(master) ✗ 4s-backend -D ontoportal_kb
Jul 14 00:20:03 4store[95464] <Info>: 4s-server.c:472 kb=ontoportal_kb runtime information file created
Jul 14 00:20:03 4store[95464] <Info>: 4s-server.c:582 4store backend v1.1.6-NCBO-SNAPSHOT-1 for kb ontoportal_kb on port 6734 (1 fds)
Jul 14 00:20:22 4store[95660] <Warning>: rhash.c:713 resource dad5d4cb7c7b9e5e not found in § 0x1ee70-0x1ee8f of /var/lib/4store/ontoportal_kb/0002/res.rhash
Jul 14 00:26:40 4store[99571] <Warning>: rhash.c:713 resource dad5d4cb7c7b9e5e not found in § 0x1ee70-0x1ee8f of /var/lib/4store/ontoportal_kb/0000/res.rhash
Do you have any idea how to fix it ? (it is maybe related to this #120)