Martin Pekár created JENA-2228:
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Summary: Does Fuseki2 use TDB indexes or in-memory indexes?
Key: JENA-2228
URL: https://issues.apache.org/jira/browse/JENA-2228
Project: Apache Jena
Issue Type: Question
Components: Fuseki, TDB
Affects Versions: Jena 3.17.0
Environment: I am running the jena-fuseki-server-3.17.0.jar file from
jena-fuseki2/jena-fuseki-server/target/ as follows
{code:java}
java -Xmx500g -jar fuseki-jenaclone.jar --tdb2 --loc=db/jena --timeout=1000000
/jena &{code}
Reporter: Martin Pekár
Fix For: Jena 3.17.0
Based on logging messages inserted into various places in the indexes in the
TDB module (NodeTupleTableConcrete, TupleIndexBase, NodeTableNative,
BPlusTree), I can see that the B+ tree is only used once per query. I have
inserted logging messages for every finding method to see which classes are
used when querying. I would expect to the the B+ tree be used several times per
query.
I use the error logging level, and I inserted logging in the class constructors
to make sure logging worked. I see construction of all the index classes.
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