tools/conf/client/lens-client-site.xml

<?xml version="1.0"?>
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<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<configuration>
  <property>
    <name>lens.client.query.poll.interval</name>
      <value>4000</value>
      <description>Interval at which query progress will be polled. Interval has to be given in milliseconds
      </description>
  </property>
  <property>
    <name>lens.cube.query.enable.flattening.bridge.tables</name>
    <value>true</value>
    <description>Flag specifies if fields selected have to be flattened or not, if they are coming from tables with many
       to many relationship in join. If false, field selection will be simple join and selecting the field. If true, the
       fields from bridge tables will be aggregated grouped by join key.
    </description>
  </property>
</configuration>