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> On 10 Oct 2018, at 3:14 pm, Pankaj Kumar <pankaj.ku...@idctechnologies.com> > wrote: > > Remove Me. > > --- > Thanks & Regards > Pankaj Kumar > IDC Technologies Inc. > Work: 408-457-9381- Ext-4102 > Mailto: pankaj.ku...@idctechnologies.com > --------------------------------------------------------- > Empowering Technologies Services > Remote Services | IT Services | BPO | > IT Consulting | Staffing Solutions | > --------------------------------------------------------- > > From: rahul patwari [mailto:rahulpatwari8...@gmail.com] > Sent: Wednesday, October 10, 2018 3:56 AM > To: tasan...@yahoo-corp.jp > Cc: user@hadoop.apache.org > Subject: Re: HDFS Federation with HA > > Hi Takanobu, > > Thanks for the reply. So, does that mean that 3 dedicated journal nodes are > required for each nameservice? or can we have the same journal nodes for all > the nameservices? > > Thanks, > Rahul > > On Wed, Oct 10, 2018 at 1:00 PM Takanobu Asanuma <tasan...@yahoo-corp.jp> > wrote: > Hi Rahul, > > Yes, it is possible. Here are the sample configurations. > > =========================================== > dfs.nameservices=ns1,ns2 > dfs.ha.namenodes.ns1=nn1,nn2 > dfs.ha.namenodes.ns2=nn1,nn2 > > dfs.namenode.rpc-address.ns1.nn1=ns1nn1:8020 > dfs.namenode.rpc-address.ns1.nn2=ns1nn2:8020 > dfs.namenode.http-address.ns1.nn1=ns1nn1:9870 > dfs.namenode.http-address.ns1.nn2=ns1nn2:9870 > > dfs.namenode.rpc-address.ns2.nn1=ns2nn1:8020 > dfs.namenode.rpc-address.ns2.nn2=ns2nn2:8020 > dfs.namenode.http-address.ns2.nn1=ns2nn1:9870 > dfs.namenode.http-address.ns2.nn2=ns2nn2:9870 > > dfs.client.failover.proxy.provider.ns1=org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider > dfs.client.failover.proxy.provider.ns2=org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider > > dfs.namenode.shared.edits.dir.ns1=qjournal://ns1jn1:8485;ns1jn2:8485;ns1jn3:8485/ns1 > dfs.namenode.shared.edits.dir.ns2=qjournal://ns2jn1:8485;ns2jn2:8485;ns2jn3:8485/ns2 > =========================================== > > Regards, > - Takanobu > > on 2018/10/10 3:07, "rahul patwari"<rahulpatwari8...@gmail.com> wrote: > > Hi, > > > Is it possible in the current architecture of HDFS to have multiple > nameservices(federation), with Active and Backup Namenode(HA) for each of the > nameservices? > > > Thanks, > Rahul > >
