despens created this task.
despens added a project: Wikibase-Containers.
Restricted Application added a subscriber: Aklapper.
Restricted Application added projects: Wikidata, User-Addshore.

TASK DESCRIPTION
  I am following this excellent tutorial by @Addshore 
<https://addshore.com/2019/11/changing-the-concept-uri-of-an-existing-wikibase-with-data/>
 to reset my WDQS after migrating data to a new Wikibase.
  
  The munging throws an error:
  
    #logback.classic pattern: %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - 
%msg%n
    23:57:52.108 [main] INFO  org.wikidata.query.rdf.tool.Munge - Switching to 
/tmp/db-dumps/mungedOut/wikidump-000000001.ttl.gz
    23:58:02.401 [main] INFO  o.wikidata.query.rdf.tool.rdf.Munger - 
Unrecognized subjects: 
[https://artbase.rhizome.org/entity/statement/Q4198-2BB92CD9-DB2D-4482-87F1-115C209FE3A9,
 https://artbase.rhizome.org/prop/statement/value/P109, 
https://artbase.rhizome.org/entity/statement/Q1623-28C1990A-7E66-442C-8617-37D890C63B30,
 https://artbase.rhizome.org/prop/statement/value/P107, 
https://artbase.rhizome.org/prop/statement/value/P108, 
https://artbase.rhizome.org/prop/statement/value/P101, 
https://artbase.rhizome.org/prop/statement/value/P102, 
https://artbase.rhizome.org/entity/statement/ [...]
  
  ...then follows a list of each and every triple in my Wikibase as 
"Unrecognized subject". Finally, the output concludes with...
  
        at 
org.wikidata.query.rdf.tool.rdf.Munger$MungeOperation.finishCommon(Munger.java:965)
        at 
org.wikidata.query.rdf.tool.rdf.Munger$MungeOperation.munge(Munger.java:493)
        at org.wikidata.query.rdf.tool.rdf.Munger.munge(Munger.java:148)
        at org.wikidata.query.rdf.tool.rdf.Munger.munge(Munger.java:192)
        at 
org.wikidata.query.rdf.tool.Munge$EntityMungingRdfHandler.munge(Munge.java:255)
        at 
org.wikidata.query.rdf.tool.Munge$EntityMungingRdfHandler.endRDF(Munge.java:243)
        at 
org.wikidata.query.rdf.tool.rdf.DelegatingRdfHandler.endRDF(DelegatingRdfHandler.java:28)
        at org.openrdf.rio.turtle.TurtleParser.parse(TurtleParser.java:223)
        at org.wikidata.query.rdf.tool.Munge.run(Munge.java:115)
        at org.wikidata.query.rdf.tool.Munge.main(Munge.java:76)
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd";><html><head><meta 
http-equiv="Content-Type" 
content="text&#47;html;charset=UTF-8"><title>blazegraph&trade; by SYSTAP</title
    ></head
    ><body<p>totalElapsed=188ms, elapsed=65ms, connFlush=0ms, batchResolve=0, 
whereClause=0ms, deleteClause=0ms, insertClause=0ms</p
    ><hr><p>COMMIT: totalElapsed=242ms, commitTime=1581813802754, 
mutationCount=6</p
    ></html
    >Processing wikidump-000000001.ttl.gz
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd";><html><head><meta 
http-equiv="Content-Type" 
content="text&#47;html;charset=UTF-8"><title>blazegraph&trade; by SYSTAP</title
    ></head
    ><body<p>totalElapsed=92ms, elapsed=92ms, connFlush=0ms, batchResolve=0, 
whereClause=0ms, deleteClause=0ms, insertClause=0ms</p
    ><hr><p>COMMIT: totalElapsed=131ms, commitTime=1581813803605, 
mutationCount=6</p
    ></html
    >File wikidump-000000002.ttl.gz not found, terminating
  
  The munger creates a `wikidump-000000001.ttl.gz` that is 535 bytes long.
  
  I wonder what the issue is with my exported TTL file, but it doesn't look 
problematic to me, all namespaces are defined at the top of the file with the 
correct base URI https://artbase.rhizome.org and the docker-compose file 
contains the environment to make that known to WDQS:
  
    environment:
      - WIKIBASE_SCHEME=https
      - WIKIBASE_HOST=artbase.rhizome.org
  
  I was trying to examine the munger's code to see when it throws the 
"Unrecognized subjects" error but the Dockerfile 
<https://github.com/wmde/wikibase-docker/blob/master/wdqs/0.3.10/Dockerfile> 
just loads compiled JVM binaries and I don't know where to find the source.

TASK DETAIL
  https://phabricator.wikimedia.org/T245352

EMAIL PREFERENCES
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To: Addshore, despens
Cc: despens, Aklapper, darthmon_wmde, Jelabra, Nandana, Lahi, Gq86, 
GoranSMilovanovic, QZanden, LawExplorer, _jensen, rosalieper, Scott_WUaS, 
Asahiko, Wikidata-bugs, aude, Addshore, Mbch331
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