Earlier, there was no operation supported for the deletion and updation of a particular record in Hive. But since updation of Hive 0.14, these operations are possible to make changes in a Hive table.
Insertion of a single value, Deletion, Updation all are now possible, in the new version of Hive that comes with full ACID support.
UPDATE tablename SET column = value [, column = value ...] [WHERE expression]
DELETE FROM tablename [WHERE expression]
Important: Whenever Insertion, Deletion, and Updation operations are to be performed on Hive(with ACID support) table, starting with 0.14.0 and above, then the table property "transactional" must be set on the selected table, starting with Hive 0.14.0.
You can also check out this video which will teach you HIve from basics: