RepDB Bug Affecting <http://www.ygroupsblog.com/blog/2009/07/20/issue-update-new-members-not-sho wing-up-in-the-member-list/> Big Groups July 20, 2009 at 10:54 am . Filed under General <http://www.ygroupsblog.com/blog/category/general/> This blog post was originally titled "New members not showing up on the member list", but the problem is actually broader than that and I wanted to take a moment to fully explain. As background, for groups with 350 or more members, Yahoo! Groups uses a "replicated database system <http://en.wikipedia.org/wiki/Database_replication#Database_replication> ", which is a key component of the backend systems that have allowed Yahoo! Groups to scale to the size it has (100+ million users across more than 12 million groups, with some groups having more than a million members) Unfortunately, we have a bug at the moment that is causing our "RepDB system" to back up and process incredibly slowly (most affected groups have not had a RepDB update since late on the 7/17). The impact on affected groups includes the following: * The member list will be out of date with new members not yet appearing on the list (though they will appear in the management logs, which are fully up to date), making it impossible for moderators to change the settings (or remove) these members. * Members who are not showing up on the member list will also not receive messages via email (although they can still read messages on the web or post via email). * Members who have recently unsubscribed (but who were set to receive individual emails or digests) will continue to receive messages from the group until the RepDB system is up to date. Apologies for the hassles we know this is causing. Solving this problem is the team's top priority. - Gordon Strause Yahoo! Groups
