https://community.cloudera.com/t5/Support-Questions/Remove-disk-permanently-from-all-Data-Nodes/m-p/314722#M226154 <P>HI All,</P><P>&nbsp;</P><P>I want to&nbsp; remove the disk from&nbsp; Cloudera permanently. So far these are the steps that I should follow.</P><P>1. Remove the disk from HDFS configuration&nbsp;<SPAN>dfs.data.dir, dfs.datanode.data.dir&nbsp;</SPAN></P><P><SPAN>2. Remove the disk physically as these are not used anymore.</SPAN></P><P><SPAN>Now the question arises is that how the data blocks will be replicated if the data is removed from the&nbsp;DataNode Default Group like /data01.&nbsp;</SPAN></P><P><SPAN>what will happen if all the blocks according to RF=3 available on /data01 on different server and now the disk is removed? what is the possibility of the blocks available on same&nbsp; /data01 with RF=3 ?</SPAN></P> Thu, 15 Apr 2021 10:51:58 GMT Chetankumar 2021-04-15T10:51:58Z