If your partition sizes are over 100MB iirc then you'll normally see warnings in your system.log, this will outline the partition key, at least in Cassandra 2.0 and 2.1 as I recall.
Your best friend here is nodetool cfstats which shows you the min/mean/max partition sizes for your table. It's quite often used to pinpoint large partitons on nodes in a cluster. More info here: https://docs.datastax.com/en/cassandra/2.1/cassandra/tools/toolsCFstats.html Thanks Mark On 9 September 2016 at 02:53, Anshu Vajpayee <anshu.vajpa...@gmail.com> wrote: > Is there any way to get partition size for a partition key ? >