Why does mapred.tasktracker.expiry.interval default to 10 mins ?

[Pratyush Banerjee]

Hi All,

I have been using hadoop on a 50 machine cluster for sometime now and 
just wondered why the mapred.tasktracker.expiry.interval defaulted to  
10 minutes.
If I want to reduce it to 1 min i.e. 6000 msec, should that cause any 
problems.

Also do i need to modify mapred.task.timeout accordingly to suit my 
reduced mapred.tasktracker.expiry.interval ?

thanks and regards,

Pratyush