Yes it can. It is a configurable property. The exact name might differ depending on the version though.
Read the details here: https://hadoop.apache.org/docs/current2/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml http://books.google.com/books?id=H3mvcxPeUfwC&pg=PA183&lpg=PA183&dq=change+hadoop+default+block+size&source=bl&ots=pXxPwd2Hv8&sig=xbcUaJ10zOkLqOPw4u35ZTRPCVc&hl=en&sa=X&ei=gujGUs-eK4ulsASMi4GIDw&ved=0CFYQ6AEwAw#v=onepage&q=change%20hadoop%20default%20block%20size&f=false You can do it programmatically as well. http://stackoverflow.com/questions/2669800/changing-the-block-size-of-a-dfs-file-in-hadoop Changing for an existing file: http://stackoverflow.com/questions/7320625/how-to-dynamic-change-existing-files-block-size-in-hadoop Regards, Shahab On Fri, Jan 3, 2014 at 11:37 AM, Kurt Moesky <[email protected]> wrote: > I see the default block size for HDFS is 64 MB, is this a value that can > be changed easily? >
