Hi,

In our release notes for upgrading to v3.2 we do not mention the need to manually reconfigure a replica set to make use of replication protocol version 1 with the following logic:

cfg = rs.conf();
cfg.protocolVersion=1;
rs.reconfig(cfg);

I'm not sure if this is intended but some users are left curious as to the correct procedure as pv1 is the default in 3.2 yet the output of rs.conf() does not indicate or clarify the replication protocol version in use after an upgrade.

We do however mention the need to reconfigure to protocol version 0 when downgrading.

Thanks,
Gerard