Re: First WAL segment file that initdb creates

The following review has been posted through the commitfest application:
make installcheck-world:  not tested
Implements feature:       not tested
Spec compliant:           not tested
Documentation:            tested, passed

The issue has been verified using below steps:
1. $ initdb -D /home/test/PG122DATA/data
2. $ ls -l /home/test/PG122DATA/data/pg_wal/
total 16388
-rw------- 1 test test 16777216 Feb 18 12:07 000000010000000000000001
drwx------ 2 test test     4096 Feb 18 12:07 archive_status

The first WAL segment file created by initdb is "000000010000000000000001", not "000000010000000000000000".