Hi All, looking for information to resolve my doubt I have found this interesting video: http://www.cloudera.com/content/cloudera/en/resources/library/training/whats-new-in-cdh4-a-guide-for-previous-attendees-of-cloudera-administrator-training-for-apache-hadoop.html
In the minute 33 the video resolves it: When a client tries to access a path not handled by a namenode it receives an exception, Question solved!!! Greetings and Merry Christmas!!! ESGLinux 2012/12/21 ESGLinux <[email protected]> > Hi All, > > I´m newbie with federation (thanks to Harsh J. for his help with the nodes > ;-) ) and I have a doubt about how clients mount the namespaces: > > If I have a NS1 that stores data for the users, for example /datausers > And I have a NS2 that stores apache logs, for example /apachelogs > > I suposse I need to configure the clients something like this: > > <property> > <name>fs.viewfs.mounttable.cluster.link./datausers</name> > <value>hdfs://namenode01.8020/datausers</value> > </property> > <property> > <name>fs.viewfs.mounttable.cluster.link./apachelogs</name> > <value>hdfs://namenode02:8020/apachelogs</value> > </property> > > My question is what happens when a client try to put a file in a > directorio at top level, for example /otherDir/. Who handles / dir ? > > I have read that it´s similar to fstab but in linux you always have / > mounted in a device, it´s necessary to do the same with federation? > > Thank in advance, > > ESGLinux, > > > > > > >
