There isn't an "s3/s6" replication lag.
There's an s3 replication lag and an s6
replication lag. If your query was running on an s3 database, and you checked
the replication lag there, you might have missed the fact that s6, on the same
server, was lagged.
To be 100% precise, I check replag on the language the script works
for. In this particular case it was russian. In order to check the
replag my script compares current time to the last edit time in the
language database.
Am I right that I need to check s3 replag as well for this particular
case but do not have to check replag on s2, s5 and s1?
mashiah