Postgresql: invalid record length at 29/E4624520 but replication looks fine

Question

What is this error? I see that replication is working fine, but I am not so sure if the data is being corrupted or not.

Can I safely ignore this error?

Answer 1

I cannot do anything else than quoting an entry from the pgsql-admin mailing list:

Just after startup, the standby tries to read and replay the WAL files which exist in the standby, and then if it finds invalid WAL record, IOW, it can no longer read valid WAL record locally, it starts replication and tries to read the WAL files from the master. So the above log message "invalid record ..." means that there is no valid WAL record in the standby, which triggers the replication. Since valid WAL records are streamed from the master, you don't need to worry about that log message.

It's worth noting that that line is only a LOG level message.