On Sat, Sep 20, 2014 at 12:11 AM, Erik Forsberg <[email protected]> wrote:
> I've added all the 15 nodes, with some time inbetween - definitely more > than the 2-minute rule. But it seems like compaction is not keeping up with > the incoming data. Or at least that's my theory. > I personally would not combine vnodes and trying to add more than one node at a time, at this time. I understand that you have a lot of nodes to add, but this is potentially confounding the situation. I conjecture that you are using level compaction. There is in your version a pathological behavior during bootstrap where one ends up doing a lot of compaction. I *think*, but am not sure, that the workaround is to use size tiered compaction during bootstrap. I *believe* that is what the patch upstream effectively does. Probably unthrottling compaction will help, assuming you are not CPU or i/o bound there. #cassandra on freenode is probably a slightly better forum for interactive discusson of detailed operational questions about production environments. =Rob
