So I can set up the pseudo distributed mode without virtual machine and get the same performance? Am I right?
Sent from my Windows Phone ________________________________ 发件人: Michael Segel<mailto:[email protected]> 发送时间: 2015/3/25 1:17 收件人: [email protected]<mailto:[email protected]> 主题: Re: Can Pseudo-Distributed Mode take advantage of multi-core structure? Short answer yes. > On Mar 24, 2015, at 11:53 AM, Xuzhan Sun <[email protected]> wrote: > > Hello, > > I want to do some test on my single node cluster for Speed. I know it is easy > to set up the Pseudo-Distributed Mode, and Hadoop will start one Java process > for each single map/reduce. > > My question is: is it parallel enough on multi-core CPU? I mean if I have 4 > mappers at the same time while my CPU have 4 cores, will the 4 mappers be > running on different cores at the same time? > > I know another way to simulate a Hadoop cluster with one machine is to use > virtual machine software such as VMware to simulate multiple machines and set > up a cluster upon these virtual machines. What's the difference between the > two methods for SPEED and PARALLEL on multi-core structure? > > Thanks, > > Xuzhan
