meaning of LEASE_RECOVER_PERIOD

[Thanh Do]

Hi,

I look at FSConstants and see this

LEASE_RECOVER_PERIOD = 10 * 1000; // i.e 10 seconds

and the only place this is used is in:

INodeFileUnderConstruction.setLastRecoveryTime()

Can any one explain to me the intuition behind this?
Why this value is fixed to be 10 seconds?

Thanks
-- 
thanh