ColumnStore logs are located in /tmp, /var/lib/columnstore/data/bulk/log, /var/log/mariadb/columnstore, etc. cmapi doesn't even have a log file. You have to use the journalctl utility. Can this be simplified and standardized into one location for all processes.
Additionally, when using cpimport the .bad file does not get written to any folder. It instead throws a 'permissions' error into the job log.