Hi,
There is the following description in wal.sgml.
Segment
files are given ever-increasing numbers as names, starting at
<filename>000000010000000000000000</filename>.
But the first WAL segment file that initdb creates is 000000010000000000000001
not 000000010000000000000000. This change was caused by old commit 8c843fff2d,
but seems the documentation had not been updated unfortunately a long time.
Attached patch replaces 000000010000000000000000 with 000000010000000000000001
in the above description.
This patch needs to be back-patched to all the supported versions.
Regards,
--
Fujii Masao