feature: The error display is too general, and the cause of the error cannot be clearly located

[shangyanwen]

Is your feature request related to a problem? Please describe.

#The error display is too general, and the cause of the error cannot be clearly located

load data infile '/tools/data/select_result19970520_2.csv' 
    -> into table lineorder_flat
    -> fields terminated by ','
    -> lines terminated by '\n';
ERROR 6 (HY000): Tianmu internal error

Describe the solution you'd like

#The error message is clear

MariaDB [ssb]> load data infile '/data2/data/select_result19970520_2.csv' 
    -> into table lineorder_flat
    -> fields terminated by ','
    -> lines terminated by '\n';
ERROR 13 (HY000): Can't get stat of '/data2/data/select_result19970520_2.csv' (Errcode: 2 "No such file or directory")

Describe alternatives you've considered

Additional context