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Questions tagged [sansa]

For questions related to SANSA, a big data engine for scalable processing of large-scale RDF data.

6 questions
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Could not initialize class org.apache.jena.riot.system.RiotLib error while running SANSA-Stack/SANSA-Examples

I am trying to run SilviaClusteringExample in SANSA-Stack/SANSA-Examples(https://github.com/SANSA-Stack/SANSA-Examples) I have setup the Spark cluster using GCP DataProc with one Master Node and 3 worker nodes. As per the instructions given, ran…
Mahek
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1 answer

Error with SANSA unable to create RDD from NT file

Unable to Create RDD[Triple] using sparkSession.rdf(Lang.NTRIPLES)(path) Used to working without issue with Java 11, and Spark 2.4.x Not working ,throwing error when using Java 8 and Spark 3.0 Exception in thread "main"…
Abhishek Sengupta
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Would it be possible to use SANSA-RDF & SANSA-Query in PySpark?

I am planning to use SANSA-RDF for reading turtle RDF/XML files into Spark and query using SANSA-Query library. Would it be possible to develop PySpark (python) code using theses libraries? Are there any PySpark (python) examples? Thanks in…
sam
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Finding triples based on multiple subjects (SANSA-STACK)

I have a code to find Triples using a subject,So I am using Triple's find method and supplying the necessary like this : import net.sansa_stack.rdf.spark.model._ val node1 = NodeFactory.createURI("http://dbpedia.org/resource/Charles_Dickens") …
user13686103
1
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1 answer

Why does Spark fail with "value rdf is not a member of org.apache.spark.sql.SparkSession"?

I am trying to use SANSA-RDF for reading turtle RDF files into Spark and create a graph. I am getting an error when I execute the following code. What am I missing? import org.apache.jena.query.QueryFactory import org.apache.jena.riot.Lang …
basicknowledge
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Alternative for BIND method in sparql

I am using Sansa stack to execute sparql queries on huge amount of data in HDFS .Sansa is a spark based framework that executes sparql queries on huge amount of data. My sparql query is having an assignment as below in it . BIND(STRAFTER(str(?d),…
dileepVikram
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