I don't know why 5kb was chosen. The general trend is that larger batches will put more stress on the coordinator node. The precise point at which things fall over will vary.
On Thu, Dec 11, 2014 at 1:43 PM, Mohammed Guller <moham...@glassbeam.com> wrote: > Hi – > > The cassandra.yaml file has property called *batch_size_warn_threshold_in_kb. > * > > The default size is 5kb and according to the comments in the yaml file, it > is used to log WARN on any batch size exceeding this value in kilobytes. It > says caution should be taken on increasing the size of this threshold as it > can lead to node instability. > > > > Does anybody know the significance of this magic number 5kb? Why would a > higher number (say 10kb) lead to node instability? > > > > Mohammed >
