https://community.cloudera.com/t5/Support-Questions/How-to-change-the-replication-factor-of-data-which-is/m-p/222277#M184149 <P>\r\ndfs.replication \r\n4 // To change the replication factor to 4\r\nBlock Replication \r\n \r\nhdfs-site.xml is used to configure HDFS. Changing the dfs.replication property in hdfs-site.xml will change the default replication for all files placed in HDFS.\r\nYou can also change the replication factor on a per-file basis using the Hadoop FS shell.\r\n[training@localhost ~]$ hadoop fs –setrep –w 4 /my/file\r\nAlternatively, you can change the replication factor of all the files under a directory.\r\n[training@localhost ~]$ hadoop fs –setrep –w 4 -R /my/dir\r\n"}" data-sheets-userformat="{"2":769,"3":[null,0],"11":4,"12":0}"&gt;The file that is loaded into HDFS which has a default Replication Factor of 3, is set in hdfs-site.xml file. The replication of that particular file would be 3, which means 3 copies of the block exists on the HDFS. </P><P>To change the replication factor, open the hdfs-site.xml file. This file is usually found in the conf/ folder of the <A href="https://data-flair.training/blogs/hadoop-2-6-multinode-cluster-setup/">Hadoop installation</A> directory. Change or add the following property to hdfs-site.xml: <BR />&lt;property&gt; <BR />&lt;name&gt;dfs.replication&lt;name&gt; <BR />&lt;value&gt;4&lt;value&gt; // To change the replication factor to 4 <BR />&lt;description&gt;Block Replication&lt;description&gt; <BR />&lt;property&gt; <BR />hdfs-site.xml is used to configure HDFS. Changing the dfs.replication property in hdfs-site.xml will change the default replication for all files placed in HDFS. <BR />You can also change the replication factor on a per-file basis using the Hadoop FS shell. <BR />[training@localhost ~]$ Hadoop fs –setrep –w 4 /my/file <BR />Alternatively, you can change the replication factor of all the files under a directory. <BR />[training@localhost ~]$ Hadoop fs –setrep –w 4 -R /my/dir</P> Thu, 14 Jun 2018 19:13:39 GMT patelharshali13 2018-06-14T19:13:39Z