Hi,

Since last week we started having problems running SOQL queries on a custom Big Object.
Executing the SOQL in our sandboxes gives no problem at all.
So querying/exporting data from Dataloader, Workbench and Execute Anonymous session all give the same error, immediately after the request is fired: "UNKNOWN ERROR: [REQUEST_RUNNING_TOO_LONG] Your request was running for too long, and has been stopped" 

Thanks,
Glenn