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Execute the following commands: cd hadoop-0.19.1 mkdir logs bin/hadoop namenode -format. Format the namenode. The last command will run for some time Learn about Hadoop HDFS commands with examples like Starting and Home / Tutorial / HDFS Operations Format the configured HDFS file system and then open the namenode (HDFS server) and execute the following command. Initially you have to format the configured HDFS file system, open namenode (HDFS server), and execute the following command. $ hadoop namenode -format. hadoop/bin/hdfs namenode -format /usr/hdp/current/hadoop-hdfs-namenode/../hadoop/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR start namenode. 11 Jun 2013 14 May 2017 Hadoop namenode -format. Hadoop namenode directory contains the fsimage and edit files which holds the basic information's about hadoop file system such 26 Jan 2016 MapReduce Tutorial · MapReduce Commands Reference · Compatibilty Configuration: Formatting Namenodes; Upgrading from an older release This guide provides an overview of the HDFS Federation feature and how I am following the online tutorial to learn Hadoop and now I am installing Hadoop on my system I will be getting after executing this command. 16 Oct 2017 Guides & Tutorials · Database Management Systems · Hadoop; How to Install and It's composed of the Hadoop Distributed File System (HDFS™) that handles .. HDFS needs to be formatted like any classical file system.NameNode and DataNodes; The File System Namespace; Data Replication. Replica .. If the NameNode machine fails, manual intervention is necessary.