Re: Start Walreceiver completely before shut down it on standby server.

On Tue, Dec 10, 2019 at 3:06 AM jiankang liu <liujk1994(at)gmail(dot)com> wrote:

> Start Walreceiver completely before shut down it on standby server.
>
> The walreceiver will be shut down, when read an invalid record in the
> WAL streaming from master.And then, we retry from archive/pg_wal again.
>
> After that, we start walreceiver in RequestXLogStreaming(), and read
> record from the WAL streaming. But before walreceiver starts, we read
> data from file which be streamed over and present in pg_wal by last
> time, because of walrcv->receivedUpto > RecPtr and the wal is actually
> flush on disk. Now, we read the invalid record again, what the next to
> do? Shut down the walreceiver and do it again.
>

I am missing something here, if walrcv->receivedUpto > RecPtr, why are we
getting / reading invalid record?