On Mon, Aug 29, 2011 at 4:56 PM, Peter Schuller <peter.schul...@infidyne.com > wrote:
> > If the client sleeps for a few ms at each loop, the success rate > > increases. At 15 ms, the script always succeeds so far. Interestingly, > > the problem seems to be sensitive to alphabetical order. Updating the > > value from 'aaa' to 'bbb' never has problem. No pause needed. > > Is it possible the version of pycassa you're using does not guarantee > that successive queries use non-identical and monotonically increasing > timestamps? > By default, pycassa uses microsecond-precision timestamps. ColumnFamily.insert() returns the timestamp used for the insert, so you could always check that it was different. However, I doubt that you're getting more than one insert per microsecond, unless you have VM issues with the system clock. -- Tyler Hobbs Software Engineer, DataStax <http://datastax.com/> Maintainer of the pycassa <http://github.com/pycassa/pycassa> Cassandra Python client library
