datastaxnewbie on "Cassandra timestamp to Solr TrieDateField"

Hi,

I have a StartTime column in Cassandra that is typed as timestamp, and I created a corresponding field in Solr schema that is of TrieDateField. When I stored the following timestamp into Cassandra, I get back the same value (4/15/2012 12:26:22 PM). When I retrieve the document through Solr using the same row key (id), the value that I get back for that same field is "20114840-09-19T02:26:40Z", which doesn't appear to be an ISO8601 format either. Do I need to set the precisionStep in Solr schema for that field? What am I doing wrong?

Thanks,

Paul