We have quite wide rows and do a lot of concentrated processing on each row...so I thought I'd try the row cache on one node in my cluster to see if I could detect an effect of using it.
The problem is that nodetool info says that even with a two gig row_cache we're getting zero requests. Since my client program is actively processing, and since keycache shows lots of activity I'm puzzled. Shouldn't any read of a column cause the entire row to be loaded? My entire data file is only 32 gig right now so its hard to imagine the 2 gig is too small to hold even a single row? Any suggestions how to proceed are appreciated. Thanks. Brian Tarbox