Does this mean: 1. Same IP, different hashes; 2. Different IPs, same hash; 3. Both?
(I imagine just 1, MD5 isn't /that/ crap at collision resistance, but.) On 15 September 2015 at 15:50, Dan Andreescu <[email protected]> wrote: > When we process Event Logging events, we hash the origin IP address and add > it to the event as part of the "capsule. We salt the hash function and > rotate the salt frequently for security, but within those periods of time > the same IP would get hashed to the same hash, and some people depended on > that. > > We recently made the Event Logging processor parallel, and we accidentally > forgot to make this hashing consistent across all the parallel instances. > So from September 10, 2015 until we fix the bug, client IPs will not be > hashed consistently. > > We are tracking this issue here: https://phabricator.wikimedia.org/T112688 > > If you have some data crunching that's affected by this, come talk to us. > We are already adding a temporary fix to the scripts that generate the > edit-analysis dashboard [1] > > > [1] https://edit-analysis.wmflabs.org/compare/ > > _______________________________________________ > Analytics mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/analytics > -- Oliver Keyes Count Logula Wikimedia Foundation _______________________________________________ Analytics mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/analytics
