Hi BELLIER, I suggest you reading some Kylin introduction document or slide. It will explain how Kylin works, for example: https://www.slideshare.net/XuJiang2/kylin-hadoop-olap-engine
With Warm regards Billy Liu 2018-02-21 19:53 GMT+08:00 BELLIER Jean-luc <jean-luc.bell...@rte-france.com>: > Hello, > > > > I was wondering about a few things : > > · When I launch a query using filters on PART_DT (from the sample > model), e.g. WHERE PART_DT=’2013-12-31’, I get a result through the Kylin > web interface, whereas it gives me a mistake in Hive and Impala, indicating > an unknown type on PART_DT. Does it mean that the data are not queried > directly in Hive, but through a “copy”. This couls explain why the syntax > “DEFAULT.<table name> does not work in the query editor. > > · What does happen when the Hive tables are populated ? Should I > resynchronize the tables or not ? > > · How is the data integrity ensured ? As far as I can notice, there > is no control on data through the model creation interface; this supposes > that the data are initially well-formed. So how does Kylin manage this > (input mistakes, …) ? > > > > Thank you in advance for your help. Have a good day. > > > > Best regards, > > Jean-Luc. > > > > "Ce message est destiné exclusivement aux personnes ou entités auxquelles il > est adressé et peut contenir des informations privilégiées ou > confidentielles. Si vous avez reçu ce document par erreur, merci de nous > l'indiquer par retour, de ne pas le transmettre et de procéder à sa > destruction. > > This message is solely intended for the use of the individual or entity to > which it is addressed and may contain information that is privileged or > confidential. If you have received this communication by error, please > notify us immediately by electronic mail, do not disclose it and delete the > original message."