On 9 September 2016 at 16:47, Rakesh Kumar <rakeshkumar46...@gmail.com> wrote:
> On Fri, Sep 9, 2016 at 11:46 AM, Mark Curtis <mark.cur...@datastax.com> > wrote: > > 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. > > Has it improved in C* 3.x. What is considered a good partition size in C* > 3.x > The 100MB is just a default setting you can set this up or down as you need it: https://docs.datastax.com/en/cassandra/3.0/cassandra/configuration/configCassandra_yaml.html#configCassandra_yaml__compaction_large_partition_warning_threshold_mb There isn't really a "good" or "bad" value, it all depends on the data model, your query patterns and required response times as to what's acceptable for your application. The 100MB default is just a guide. If you're seeing partitions of 1GB and above then you may very well start to see problems. Again cfstats is your friend here! -Mark
