Cassandra : 3.3 CQLSH : 5.0.1 If there is a typo in the column name of the copy command, we get this:
copy mytable (event_id,event_class_cd,event_ts,receive_ts,event_source_instance,client_id,client_id_type,event_tag,event_udf,client_event_date) from '/pathtofile.dat' with DELIMITER = '|' AND NULL = 'NULL' AND DATETIMEFORMAT='%Y-%m-%d %H:%M:%S.%f' ; Starting copy of mytable with columns ['event_id', 'event_class_cd', 'event_ts', 'receive_ts', 'event_source_instance', 'client_id', 'client_id_type', 'event_tag', 'event_udf', 'event_client_date']. load_ravitest.cql:5:13 child process(es) died unexpectedly, aborting the typo was in the name of event_client_date. It should have been client_event_date.