[thredds] recheckEvery without scan

[Upendra Dadi <Upendra.Dadi@xxxxxxxx>]

Hi,
 I have a joinExisting ncml file which gets updated every day. But the 
THREDDS cache is not updating. I have included a recheckEvery attribute 
in the file. But the file does not have any scan element, the netCDF 
files are in different directories. RecheckEvery doesn't seem to have 
any effect. How do I update the Cache automatically every time the ncml 
file changes?  Is it possible to update the cache without restarting Tomcat?
Can someone please help?

Upendra