PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> Hello, I have encountered a problem in building a primary and standby
> cluster using physical streaming replication on different CPU machines.
> We created the primary on the x86 machine, and created the standby on the
> arm machine.
You should not expect that to work. Physical replication requires
identical hardware architectures, not to mention mostly-the-same
operating system software. (The most usual gotcha for cross-system
replication is different locale sort orders.)
regards, tom lane