Increase timeout

[Michael Havey]

I am calling Ontop as part of a federated query from a graph database. It occasionally times out. How can I increase the timeout on Ontop? I notice there is a configuration value ontop.query.defaultTimeout. Is this measured in milliseconds? What is the effect of setting it?

Does Ontop set query timeout on JDBC call in the code? Does it use ontop.query.defaultTimeout. value?

[Benjamin Cogrel]

Hi Michael,

Yes, ontop.query.defaultTimeout is the key to use. It is measured in seconds (I just updated the documentation, thanks for the question!).

Its effect is to call the setQueryTimeout method of the JDBC statement:

https://github.com/ontop/ontop/blob/version4/engine/system/sql/core/src/main/java/it/unibz/inf/ontop/answering/connection/impl/SQLQuestStatement.java#L94

Best,

Benjamin

On Wed, Aug 31, 2022 at 8:13 PM Michael Havey <mch...@gmail.com> wrote:

I am calling Ontop as part of a federated query from a graph database. It occasionally times out. How can I increase the timeout on Ontop? I notice there is a configuration value ontop.query.defaultTimeout. Is this measured in milliseconds? What is the effect of setting it?

Does Ontop set query timeout on JDBC call in the code? Does it use ontop.query.defaultTimeout. value?

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