Re: Streaming replication on win32, still broken

Magnus Hagander <magnus@hagander.net> writes:
> On Wed, Feb 17, 2010 at 06:55, Fujii Masao <masao.fujii@gmail.com> wrote:
>> 2. Straightforwardly observe the alignment rule. Since the received WAL
>>  data might start at the middle of WAL block, walreceiver needs to keep
>>  the last half-written WAL block for alignment. OTOH since the received
>>  data might end at the middle of WAL block, walreceiver needs zero-padding.
>>  As a result, walreceiver writes the set of the last WAL block, received
>>  data and zero-padding.

> May there be other reasons to d this as well?

Writing misaligned data is certain to be expensive even when it works...

			regards, tom lane