I do not think the mmap OOM is connected with the row size. Add some info to the other thread if you think it's relevant.
Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 7/02/2012, at 10:33 AM, Ajeet Grewal wrote: >> It's also a good idea to partition time series data so that the rows do not >> grow too big. You can have 2 billion columns in a row, but big rows have >> operational down sides. > > What are the down sides here? Unfortunately I have an existing system > which I modeled with large rows (because I use the sorted nature of > columns to get column ranges). After the amount of data grows, I get > "mmap failed" exceptions (See my other thread "Cassandra OOM"). I > wonder if there is a connection. > > -- > Regards, > Ajeet
