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ZooKeeper error ; unrecognized host name for local configuration

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I am using Kylin 4+ and want to use Windows and run it locally (without Hadoop). I follow this tut in their website which states that zookeeper config must be set to local like so:

kylin.env.zookeeper-is-local=true

Which supposes that Kylin won't read any other parameter (as connection string) to connect. But when I run Kylin I get the following error:

Caused by: java.net.UnknownHostException: sandbox.hortonworks.com

on load table from csv in the model tab. When I check the configuration from within the Web UI I have the following configuration for zooKeeper:

kylin.env.zookeeper-is-local=true
kylin.env.zookeeper-connect-string=sandbox.hortonworks.com

But from the \kylin\examples\test_case_data\sandbox\kylin.properties:

I have commented out kylin.env.zookeeper-connect-string=sandbox.hortonworks.com

How to solve this and pass by ZooKeeper?

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