You have to use this command to format hdfs namenode –format
not hdfs dfs -format On 8/27/14, Blanca Hernandez <blanca.hernan...@willhaben.at> wrote: > Hi, thanks for your answers. > > Sorry, I forgot to add it, I couldn´t run the command neither: > > C:\development\tools\hadoop>%HADOOP_PREFIX%\bin\hdfs dfs -format > -format: Unknown command > > C:\development\tools\hadoop>echo %HADOOP_PREFIX% > C:\development\tools\hadoop > > By using –help command there is no format param. > My Hadoop version: 2.4.0 (the latest version supported by mongo-hadoop). > > Best regards, > > Blanca > > > Von: Arpit Agarwal [mailto:aagar...@hortonworks.com] > Gesendet: Dienstag, 26. August 2014 21:39 > An: user@hadoop.apache.org > Betreff: Re: Running job issues > >> And the namenode does not even start: 14/08/26 12:01:09 WARN >> namenode.FSNamesystem: Encountered exception loading fsimage >> java.io.IOException: NameNode is not formatted. > > Have you formatted HDFS (step 3.4)? > > On Tue, Aug 26, 2014 at 3:08 AM, Blanca Hernandez > <blanca.hernan...@willhaben.at<mailto:blanca.hernan...@willhaben.at>> > wrote: > Hi! > > I have just installed hadoop in my windows x64 machine.l followd carefully > the instructions in https://wiki.apache.org/hadoop/Hadoop2OnWindows but in > the > 3.5<https://wiki.apache.org/hadoop/Hadoop2OnWindows%20but%20in%20the%203.5> > and 3.6 points I have some problems I can not handle. > > %HADOOP_PREFIX%\sbin\start-dfs.cmd > > > The datanode can no connect: 14/08/26 12:01:30 WARN datanode.DataNode: > Problem connecting to server: > 0.0.0.0/0.0.0.0:19000<http://0.0.0.0/0.0.0.0:19000> > And the namenode does not even start: 14/08/26 12:01:09 WARN > namenode.FSNamesystem: Encountered exception loading fsimage > java.io.IOException: NameNode is not formatted. > > Trying to get running the mapreduce-example indicated in the pont 3.6, I get > the connection exception again. Tha brings me to the > http://wiki.apache.org/hadoop/ConnectionRefused page where the exception in > explained. So I guess I have some misunderstandings with the configuration. > I tried to find information about that and found the page > http://wiki.apache.org/hadoop/HowToConfigure but is still not very clear for > me. > > I attach my config files, the ones I modified maybe you can help me out… > > Many thanks!! > > > CONFIDENTIALITY NOTICE > NOTICE: This message is intended for the use of the individual or entity to > which it is addressed and may contain information that is confidential, > privileged and exempt from disclosure under applicable law. If the reader of > this message is not the intended recipient, you are hereby notified that any > printing, copying, dissemination, distribution, disclosure or forwarding of > this communication is strictly prohibited. If you have received this > communication in error, please contact the sender immediately and delete it > from your system. Thank You. >
