Update base for Update on "make et.export support etrecord generation"

this diff makes et.export etrecord generation supportive. Details can be found in #12925.

After this change, all things in #12925 has completed.

Differential Revision: [D79741917](https://our.internmc.facebook.com/intern/diff/D79741917/)

[ghstack-poisoned]

Author: Gasoonjia