It *could* depend on the way the refactor engine is creating
OntologyInputSource objects. Rather than using some of its readily
available implementations, it's re-implementing the whole interface
every time.
Alessandro
On 3/16/12 10:55 AM, David Riccitelli wrote:
After one analysis job the following resources were used:
- disk space in sling/felix/bundle85/data/tdb-data/mgraph raised from
1.8M to 5.5M.
- open files by java process raised from 734 to 1.681.
BR
David
On Fri, Mar 16, 2012 at 11:53 AM, David Riccitelli<[email protected]>wrote:
Hoping these more details can help solve this issue: in order to restart
Stanbol I have to clear up the sling/felix/bundle85/data/tdb-data/mgraph/
folder otherwise these files get loaded at start-up and the server breaks
with 'Too many open files'.
BR
David
On Fri, Mar 16, 2012 at 11:49 AM, David Riccitelli<[email protected]>wrote:
I'll try to add more details on what is happening now: all the analysis
jobs are failing because of this error: java.io.IOException: Too many open
files.
I found more than 1.300 ontonet files open by the *java* process:
$ lsof | grep "mgraph/ontonet" | wc -l
1323
e.g.
sling/felix/bundle85/data/tdb-data/mgraph/ontonet%3A%3Ainputstream%3Aontology49/OSP.idn
sling/felix/bundle85/data/tdb-data/mgraph/ontonet%3A%3Ainputstream%3Aontology49/OSP.dat
It's important to note that I am the only user on this stanbol instance
and the error is raised at the second analysis.
I think I can easily help you reproduce this issue in case.
BR
David
On Fri, Mar 16, 2012 at 11:44 AM, Rupert Westenthaler<
[email protected]> wrote:
Hi David, all
this could be the explanation for the failed build on the Jenkins server
when the SEO configuration for the Refactor engine was used in the default
configuration of the Full launcher
see http://markmail.org/message/sprwklaobdjankig for details.
For me that looks like as if the RefactorEngine does create multiple
Jena TDB instances for various created MGraphs. One needs to know the even
for an empty graph Jena TDB creates ~200MByte of index files. So it is
important to map multiple MGraphs to different named graphs of the same
Jena TDB store.
I have no Idea how Clerezza manages this or how Ontonet creates MGraphs,
but I hope this can help in tracing this down.
best
Rupert
On 16.03.2012, at 10:30, David Riccitelli wrote:
Dears,
As I ran into disk issues, I found that this folder:
sling/felix/bundleXXX/data/tdb-data/mgraph
where XX is the bundle of:
Clerezza - SCB Jena TDB Storage Provider
org.apache.clerezza.rdf.jena.tdb.storage
took almost 70 gbytes of disk space (then the disk space has been
exhausted).
These are some of the files I found inside:
193M ./ontonet%3A%3Ainputstream%3Aontology889
193M ./ontonet%3A%3Ainputstream%3Aontology1041
193M ./ontonet%3A%3Ainputstream%3Aontology395
193M ./ontonet%3A%3Ainputstream%3Aontology363
193M ./ontonet%3A%3Ainputstream%3Aontology661
193M ./ontonet%3A%3Ainputstream%3Aontology786
193M ./ontonet%3A%3Ainputstream%3Aontology608
193M ./ontonet%3A%3Ainputstream%3Aontology213
193M ./ontonet%3A%3Ainputstream%3Aontology188
193M ./ontonet%3A%3Ainputstream%3Aontology602
Any clues?
Thanks,
David Riccitelli
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M.Sc. Alessandro Adamou
Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy
Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy
"I will give you everything, so long as you do not demand anything."
(Ettore Petrolini, 1930)
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