question To what extent is schema evolution available in ORC files in Hive 0.13? in Archives of Support Questions (Read Only)

To what extent is schema evolution available in ORC files in Hive 0.13?

Hadoopy — Mon, 26 Feb 2018 03:36:56 GMT

Are the changes in schema like adding, deleting, renaming, modifying data type in columns permitted without breaking anything in ORC files in Hive 0.13.

Re: To what extent is schema evolution available in ORC files in Hive 0.13?

nmaillard1 — Tue, 27 Feb 2018 16:03:14 GMT

Adding columns to the end of the table works from Hive 1.2 (via HDP 2.5.4).

In Hive 2.1, you get additional abilities to change the column types. In the eventual Hive 2.2, you'll get the ability to delete and reorder columns.

Hive .13 is a little early for those features