Hi @amanadas,
Can you try adding these directives under the [mysqld] section in your my.cnf?
character-set-server=utf8
collation-server=utf8_general_ci
You will need to reload your MySQL daemon after doing so.
Note that you do not have to reinstall/reconfigure the entire instance from scratch in order to repopulate the DWH databases.
You can run:
# /opt/kaltura/bin/kaltura-drop-dwh.sh
which will drop all DWH DBs [note that this cannot be reversed and all data will be lost] and then:
# /opt/kaltura/bin/kaltura-dwh-config.sh /path/to/config.ans