Memory leak in fuseki?

[christophe heligon <ch...@univ-rennes1.fr>]

Hi everyone, 

I am using Apache Jena Fuseki 4.6.1 to host 2 datasets (rdf + rdf-star). 

I have noticed an unexpected behaviour on my server as my RAM gets filled little by little over time ( 100 Mo / few minutes can be several Go at the end) when no queries are received by the server. When I submit a query using fuseki GUI the RAM gets freed (at least partially) from what seemed to have accumulated into it in between queries. 

The java process is using that memory see attached file. Note that I use the standard configuration provided by the server except for the max memory that I set to 20 Go. The java process is largely exceeding this limit as it may reach over 50 Go. 

Is it a known issue of Fuseki? Java? 
Is there a way to monitor that better than just record memory use? 

Any fix published or hint on how to solve that? 

Best regards, 
Christophe 

-- 

	


	Christophe Héligon 


Institut de Génétique & Développement de Rennes 

Equipe Ingénierie Inverse de la Division Cellulaire (CeDRE) 



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