Does anybody can comment 'copying NN metadata directory' vs 'hdfs dfsadmin -fetch', using NN HA configuration?
On Fri, Jan 31, 2014 at 8:26 PM, Ivan Tretyakov <itretya...@griddynamics.com > wrote: > Hi! > > We are using following version of Hadoop software: 2.0.0-cdh4.1.1. > > HDFS HA configuration is applied. > > I would like to ask if there are any difference or possible side effects > of backing up namenode data directory. > > It is ok to just copy NN data directory from active NN to another host, > what about standby NN? > Or it may NN metadate can be in inconsistent state? > Is there any advantages of using "hdfs dfsadmin -fetch <file>" command? > > -- > Best Regards > Ivan Tretyakov > > Deployment Engineer > Grid Dynamics > +7 812 640 38 76 > Skype: ivan.v.tretyakov > www.griddynamics.com > itretya...@griddynamics.com > -- Best Regards Ivan Tretyakov Deployment Engineer Grid Dynamics +7 812 640 38 76 Skype: ivan.v.tretyakov www.griddynamics.com itretya...@griddynamics.com
