Re: Two questions about hadoop

2008-07-16 Thread chaitanya krishna
Hi, Try setting number of map tasks in the program itself. For example, in the Wordcount example, you can set the number of maptasks in run method as conf.setNumMapTasksno. of map tasks I hope this answers your first query. Regards, V.V.Chaitanya Krishna IIIT,Hyderabad On Wed, Jul 16, 2008

Two questions about hadoop

2008-07-15 Thread Wei Jiang
Hi all, I am a new user with hadoop and have some questions about it. 1)about setting the number of maps/reduces: With running hadoop on a 8-node cluster, I set mapred.map.tasks to 64 and mapred.tasktracker.map.tasks.maximum to 8, but by examining the counter launched map tasks from the output,