On Thu, Sep 16, 2010 at 11:00 AM, Thomas Boucher <ethx...@gmail.com> wrote:
> Hi, > > I am trying out the latest trunk version and I get an error when > starting Cassandra with -Xmx3G: > Fatal error: memtable_operations_in_millions must be a positive double > > I guess it is caused by line 76 in org/apache/cassandra/config/Config.java > [0]: > > public Integer memtable_throughput_in_mb = (int) > Runtime.getRuntime().maxMemory() / 8; > > The cast to (int) is done on maxMemory() but this method returns a > long, leading to a cast to a negative integer for mem=3G for instance. > Thus memtable_operations_in_millions becomes negative (Double > memtable_operations_in_millions = memtable_throughput_in_mb / 64 * > 0.3) and the exception is thrown: > > maxMemory() is measured in bytes but I guess memtable_throughput_in_mb > should in MB (as it names imply), which is not the case here. > Oops, good catch. Fixed in r997841. -Brandon
