NotEnoughMemoryForDistinctGroupBy error - how to pass a parameter to a Sail

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Hello all,

I am creating programmatically a Local Repository in rdf4j, I understand that this runs on top of Sail
LocalRepositoryManager manager = new LocalRepositoryManager(baseDir);

and passing the repository configuration as a config ttl, as it is described here in the section "Configure a repository programmatically" :
https://graphdb.ontotext.com/documentation/standard/configuring-a-repository.html

Since I am getting this error:

2021-01-19 22:39:25 [main] ERROR c.ontotext.trree.SailConnectionImpl - Memory limit for GroupBy/Distinct reached
com.ontotext.trree.util.NotEnoughMemoryForDistinctGroupBy: Insufficient free Heap Memory 177Mb for group by and distinct, threshold:250Mb, reached 0Mb

In graph db, I see that this flag should be passed for not getting this error: -Ddefault.min.distinct.threshold "value threshold".

Do you know which flag should be passed to Sail, and how it can be passed so as not to get this error?

Thanks,

Zoe

[Bart Hanssens (BOSA)]

Hi,

 

This is probably better answered by someone from OntoText, but I assume that it cannot be changed via Sail,

and that it has to be changed on the server itself  (probably requiring a restart of the server)

• https://graphdb.ontotext.com/documentation/standard/configuring-a-repository.html#configure-graphdb-memory

 

Best regards

 

Bart

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