Rather than using the embedded Hive server that comes with WSO2 BAM by default, you can connect to an external Hive server using the following properties in <BAM_HOME>/repository/conf/advanced/hive-site.xml file.
hive-site.xml
<property>
<name>hive.server.url</name>
<value>jdbc:hive://host:port/default</value>
</property>
<property>
<name>hive.server.user</name>
<value></value>
</property>
<property>
<name>hive.server.password</name>
<value></value>
</property>