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We run into a problem... when we running a query that has no results select * from Object where id <non existent id> qserv can't map it to any chunk (makes sense), and it ends up executing SELECT * FROM qservTest_case01_qserv.Object_1234567890 AS QST_1_ WHERE objectId=430213989000 the chunk 1234567890 is a special chunk and it exists on all nodes. And that upsets our code (build/qdisp/QueryResource.cc:61) - Error provisioning, msg=Unable to write file; multiple files exist. code=2 So I suspect if we started replicating our chunks we'd be in trouble too.... Anyway, we should open a ticket and fix that, but I wanted to collect more info before doing it, especially since I seem to recall we talked about something similar with AndyH. Any recollections anyone? Jacek ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the QSERV-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=QSERV-L&A=1