是否有 sql 命令删除外部表的 HDFS 上的文件

Question

I would ask if there is a sql command in hive to drop the table and delete the files on hdfs for this external table.

When I use hdfs command to delete the files, I am always afraid that I may delete other files that doesn't belong to this external table.

Answer 1

There is no such sql command to drop external table directly but there is an alternative

1. First make this table as managed:
2. Drop the table

Step 1:

ALTER TABLE <table-name> SET TBLPROPERTIES('EXTERNAL'='False');

Step 2:

 drop table <table-name>; //now the table is internal if you drop the table data will be dropped automatically.