Can you share the full command/error? I've carried out a simple test with exactly the same and it worked just fine:
[admin@ip-172-31-27-26 test]$ tsload --source_file time.csv --target_table time_test --target_database test --time_format "%H:%M:%S" --field_separator "\t" Started processing data row Source has 3 data rows, ignored row count 0 Waiting for rows to commit...(please wait) Source summary -------------- Data source: time.csv Source data format csv Header row? no Tokenizer Options: escape_char: "" field_separator: "\t" enclosing_char: "\"" null_value: "(null)" trailing_field_separator: false Date format: %Y%m%d Date time format: %Y%m%d %H:%M:%S Flexible mode? no Load summary ------------ Target table: time_test Should empty target? no Status: Successful Rows total: 3 Rows successfully loaded: 3 Rows failed to load: 0 % of Rows successfully loaded: 100.00 % Load Rate (MB/s): 0.00 MB/s Load Rate (Rows/s): 1.87 Rows/s Start time (Wallclock): Mon Nov 26 09:25:14 End time (Wallclock): Mon Nov 26 09:25:15 Total load time = 1.61 seconds = 0.03 minutes = 0.00 hours Data size = 54 bytes = 0.05 KB = 0.00 MB [admin@ip-172-31-27-26 test]$ tql Welcome to ThoughtSpot SQL command line interface. Press Control-C to clear current command. Press Control-D or enter exit; to exit. Enter help or h; or help; for available commands. Connected to service (Load) address cluster: CustomerSuccess999 zoo servers: 127.0.0.1:2181 (Query) address cluster: CustomerSuccess999 zoo servers: 127.0.0.1:2181 (Callosum) address cluster: CustomerSuccess999 zoo servers: 127.0.0.1:2181 TQL [database=(none)]> use test; Changing database context to test Statement executed successfully.