This is about 5gb one time. Network speed lets us say 200mb/sec Let us say you have 10 node cluster.
Choose your partition key such a way that, it can write on all nodes. That means about 0.5gb per node. With 200 mb/sec network speed, 500 mb takes 500*8/200 would give 20 secs total time for ingestion If you have a memtable size of 4gb, all of it can fit in memory. Sent from my iPhone > On 17-Nov-2015, at 8:02 PM, Tushar Agrawal <agrawal.tus...@gmail.com> wrote: > > We get periodic bulk load (twice a month) in form of delimited data files. We > get about 10K files with average size of 50 MB. Each record is a row in > Cassandra table. > > > > What is the best way to ingest data into cassandra in fastest possible way? > > > > Thank you, > > Tushar