If you want to learn more about the networking on small to mid-size production sites, I recommend you do a search for “Hadoop reference architectures”.
As an example, a good source of information is here: http://en.community.dell.com/techcenter/extras/m/white_papers/20353010.aspx (I’m not sponsoring any specific distro or vendor, you can as well read more about HP’s Hortonworks reference architecture, Intel’s own Hadoop distro, or MapR’s for example) ./g From: Stanley Shi [mailto:s...@gopivotal.com] Sent: Wednesday, March 12, 2014 12:48 AM To: user@hadoop.apache.org Subject: Re: In hadoop All racks belongs to same subnet ! There's no limitation on same-subnet. Regards, Stanley Shi, <http://www.gopivotal.com/files/media/logos/pivotal-logo-email-signature.png> On Wed, Mar 12, 2014 at 1:31 PM, navaz <navaz....@gmail.com> wrote: Hi all Question regarding hadoop architecture . Generally in hadoop cluster nodes are placed in racks and all the nodes connected to top of the rack switch . And all these top of the rack switch connected by another switch or router ? Is all nodes in the cluster belong to same subnet ? Or hdfs write & read has to pass through internet ? Regards Navaz -- Abdul Navaz Masters in Network Communications University of Houston Houston, TX - 77204-4020 Ph - 281-685-0388 <mailto:fabdulna...@uh.edu> fabdulna...@uh.edu