* commit eeb5584477908802a07e16629a32a1908038bf80 forced full scan of all records
on every run (5 minute intervalls). this is excessive, strains the system, and
takes a long time. instead use a 4 hour overlap and go back 365 days occasionally
* increase chunk size to 2x10^6 for efficiency
Signed-off-by: Thorsten Schwander thorsten.schwander@gmail.com