Please see http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1-latest/bk_system-admin-guide/content/ch_hadoop-ha-3-2.html Look for 'Standby NameNode'
Cheers On Wed, Jan 7, 2015 at 8:57 PM, Shashidhar Rao <raoshashidhar...@gmail.com> wrote: > Hi, > Thanks it helped me a lot. But I am not seeing any secondary namenode so > my question is is Secondary Namenode required in HA Hadoop cluster > > Thanks > Sd > > On Thu, Jan 8, 2015 at 9:38 AM, Ted Yu <yuzhih...@gmail.com> wrote: > >> Please take a look at >> http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1-latest/bk_system-admin-guide/content/ch_hadoop-ha-3-1.html >> >> Cheers >> >> On Wed, Jan 7, 2015 at 8:00 PM, Shashidhar Rao < >> raoshashidhar...@gmail.com> wrote: >> >>> Hi, >>> >>> I want to setup Hadoop HA with 2 NameNodes and journal nodes. But I am >>> not sure what should be the configuration of journal nodes >>> >>> 1. How many journal nodes I need >>> 2. What should be the machine configuration like RAM, disk size etc >>> >>> This is for a fairly small cluster dealing with 20 Terabytes of data. >>> >>> Thanks >>> Sd >>> >> >> >
