On Wed, Jan 15, 2014 at 11:36 AM, Logendran, Dharsan (Dharsan) < dharsan.logend...@alcatel-lucent.com> wrote:
> Lets say we have a two nodes cluster(node_a and node_b) with the > replication factor of 2. It means both nodes(node_a and node_b) will have > the same amount of data replicated. If one node(node_b) goes down and comes > back. Is there any way for us to find out how the node_b is behind(out of > sync) or needs to catch up. The amount could be in bytes, number of rows > for each column family etc. > You can see how many hints node_a has stored for node_b, and look at how large that is on disk, but that's about it. If you exhaust max_hint_window_in_ms there is literally no way to know how out of sync you are until you run repair. Other notes : 1) If you're asking this question, you probably have not internalized what the "eventual" part of eventual consistency really means to your application. 2) RF=N=2 is not a recommended production configuration. Minimal recommended is usually RF=3, N=6. =Rob
