On Wed, Mar 30, 2016 at 8:07 PM, Mukil Kesavan <weirdbluelig...@gmail.com> wrote: > Are there any issues if this causes a huge time correction on the cassandra > cluster? I know that NTP gradually corrects the time on all the servers. I > just wanted to understand if there were any corner cases that will cause us > to lose data/schema updates when this happens. In particular, we seem to be > having some issues around missing secondary indices at the moment (not all > but some).
As a thought experiment, imagine every scenario where it matters to have one write occur after another (an update followed by a delete is a good example). Now imagine having your clock yanked backward to correct for drift between the first such operation and the second. I would strongly recommend you come up with a stable NTP setup. -- Eric Evans eev...@wikimedia.org
