Due (I think) to a bug in the request processor 404s end up putting a
list of values into the start time variable which caused this bit
to fail and not clear out the old data. Here was the debug
[-conn3-] Error: return: failed to redirect '404': exceeded recursion limit of 3
followed by
[-sched-] Debug: JCD: ds_sweep_data: name:4.start nsv:1026036712 1026036712 1026036712 1026036712
when the ds_sweep_data proc was run. Probably should catch the whole
statement to insure that the cleanup is more robust but it is all
treating the symptoms not the disease (RP).