On Tue, Jul 19, 2011 at 7:24 AM, Maxim Potekhin <potek...@bnl.gov> wrote:
> We have something of the order of 200GB load on each of 3 machines in a > balanced cluster under 0.8.1. > I started repair about 24hrs ago and did some moderate amount of inserts > since then (a small fraction of > data load). The repair still appears to be running. What could go wrong? > > Thanks, > Maxim > > Repair calculates a merkle tree on each node and then transmits differences to its neighbours. Because this process run on all your data it can take a LONG time. See http://wiki.apache.org/cassandra/LargeDataSetConsiderations Use 'nodetool compactionstats' and 'nodetool streams' to check the progress. My rule of thumb is do not have more storage on a node then you can compact in 3 hours. So for that you either need fast disks or more nodes.
