How can I map-reduce large gzip file in parallel ?

[심탁길]

 
Hi
 
I need to handle 4GB gzip style file.  
 
I thought that I could map-reduce even such a large gzip file in parallel. --;
 
In reality, we should deal with the gzip style log file which is larger than 
the default block size(64M)
 
and whenever face the situation , full-scanning and processing a large log file 
with only one commodity machine is
 
not desirable
 
is there any idea to solve this kind of issue ?