Attachments are filtered from the list, please either copy paste the
configuration into the email body, or if it is very large put it on a paste
sharing service list GitHub gist/Pastebin and provide a link
* I've found that if a named graph isn't explicitly mentioned in the
config file, it will not be persistent
That sounds very strange, there should be no need to explicitly mention your
named graphs in the configuration file.
* Is there something I have to tell fuseki, that it should persist
triples, which it had recorded in the previous database but is not indicated in
the recreated database?
No, unless you’ve explicitly configured a non-persistent database then the
default configurations should create persistent databases. So it probably
depends how far your configuration has diverged from the common defaults people
tend to start from.
Rob
From: [email protected]
<[email protected]>
Date: Tuesday, 21 January 2025 at 12:25
To: [email protected] <[email protected]>
Subject: SPAM-LOW: RE: [EXTERNAL] Re: Fuseki Data Not Persistent
4. I start Fuseki under Windows from the command line with this command:
%FUSEKI_HOME%\fuseki-server.bat --conf %MSRO_HOME%\fuseki_config.ttl
I've attached the fuseki_config.ttl file. It's rather long because I've found that if a
named graph isn't explicitly mentioned in the config file, it will not be persistent, and
I have to repeat these definitions for 9 databases. I'm focused on the "prod"
database only at the moment, so you can ignore the rest. Also, I've tried deleting the
config file definitions for the graph I dropped (companies), but it made no difference.
5. I load the n-quads with this curl command:
curl -H 'Content-Type: application/n-quads' -w 'code=%{http_code}
connect=%{http_connect} bytes=%{size_upload} ##' -T /tmp/loadFuseki.2224.ttl
http://localhost:3030/prod/data
The tmp file has a .ttl extension, but in fact it contains n-quads. The
filename is generated by a script of mine.
I grep the output for "code" "connect" and "bytes". Code is 200 (success),
bytes=128456749, and connect is blank (no proxy). I am able to query the triples just fine, but when I stop
and restart Fuseki, they are gone.
What is greatly mystifying is that this problem seems to have started when I
deleted and recreated the database, but I had not changed the config file. Is
there something I have to tell fuseki, that it should persist triples, which it
had recorded in the previous database but is not indicated in the recreated
database?
Your help is greatly appreciated!
Theodore Hills
Consultant | Research
Phone: +1 212 296-1833
[email protected]
-----Original Message-----
From: Lorenz Buehmann <[email protected]>
Sent: Tuesday, January 21, 2025 2:29 AM
To: [email protected]
Subject: [EXTERNAL] Re: Fuseki Data Not Persistent
Hi,
can you add details on steps 4 and 5 please?
You're starting Fuseki with a configuration targeting a TDB1 database?
Or did you accidentally start it in in-memory mode?
How do you load the quads? Via SPARQL? Via CLI?
Cheers,
Lorenz
On 20.01.25 23:27, [email protected] wrote:
Hi,
I'm having a problem which happened once before under circumstances I could
correct. This time, I am mystified.
I am running a TDB(1) database under apache-jena-fuseki-4.6.1.
1. I backup my database using curl -XPOST
http://localhost:3030/\$/backup/prod<http://localhost:3030/$/backup/prod><http://localhost:3030/$/backup/prod%3chttp:/localhost:3030/$/backup/prod%3e>
2. I stop Fuseki with ^C.
3. I delete the Data-0001 directory.
4. I start Fuseki. It recreates an empty triple store.
5. I load quads from the backup.
6. I query my named graphs, counting triples, and they're all there.
7. I stop Fuseki with ^C.
8. I restart Fuseki.
9. My triples are gone.
Any ideas what could cause this?
One note: The main reason I wanted to recreate the database was to reduce its
size, which had grown enormous. When I tried to reload, Fuseki ran out of heap
space. No problem: I filtered the n-quads, removing all the quads destined for
one of the named graphs I didn't really need anymore, and it loaded just fine.
Could something have gone wrong because I removed all of the quads belonging to
one graph?
Thanks,
Ted
Theodore Hills
Consultant | Research
Phone: +1 212 296-1833
[email protected]<mailto:[email protected]>
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NOTICE: Morgan Stanley is not acting as a municipal advisor and the opinions or
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--
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Email [email protected]
Institute for Applied Informatics e.V. (InfAI) | Goerdelerring 9 | 04109
Leipzig | Germany
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will make certain research products and announcements available only on the
Morgan Stanley Matrix Platform. The content provided in this email, including
data or any attachments, is subject to the terms and conditions of use
(available at
https://ny.matrix.ms.com/matrix/portal/docs/terms/index.html#/terms/general )
applicable to research materials accessed through Matrix, including the terms
regarding confidentiality and intellectual property rights. For access to the
Morgan Stanley Matrix Platform please contact your sales representative or go
to http://matrix.ms.com/eqr/research.
NOTICE: Morgan Stanley is not acting as a municipal advisor and the opinions or
views contained herein are not intended to be, and do not constitute, advice
within the meaning of Section 975 of the Dodd-Frank Wall Street Reform and
Consumer Protection Act. If you have received this communication in error,
please destroy all electronic and paper copies and notify the sender
immediately. Mistransmission is not intended to waive confidentiality or
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