How Do I Enable the Map Type on ClickHouse?

Run the following command to modify the /opt/Bigdata/components/current/ClickHouse/configurations.xml configuration file to enable user parameter customization:

vim /opt/Bigdata/components/current/ClickHouse/configurations.xml

Change hidden to advanced, as shown in the following information in bold. Then save the configuration and exit.

<property type="hidden" scope="all" classification="Customization" classdesc="RESID_CLICKHOUSE_CONF_0056">
        <name>_clickhouse.custom_content.key</name>
        <value>_user-xml-content</value>
</property>
<property type="advanced" scope="all" classification="Customization" classdesc="RESID_CLICKHOUSE_CONF_0056">
       <name>_user-xml-content</name>
       <value vType="text" checker="clickhouse.xmlformat">&lt;yandex&gt;&lt;/yandex&gt;</value>
       <description>RESID_CLICKHOUSE_CONF_0025</description>
</property>

Run the following commands to switch to user omm and restart the controller service:
su - omm

sh /opt/Bigdata/om-server/om/sbin/restart-controller.sh
Log in to FusionInsight Manager, choose Cluster > Services > ClickHouse. On the page that is displayed, click the Configurations tab then the All Configurations sub-tab. Click ClickHouseServer(Role) > Customization, and add the following content to the _user-xml-content configuration item in the right pane:
```
<yandex>
  <profiles>
    <default>
   <allow_experimental_map_type>1</allow_experimental_map_type>
    </default>
  </profiles>
</yandex>
```
Click Save.
Choose Cluster > Services > ClickHouse. In the upper right corner, choose More > Restart Service to restart the ClickHouse service.