Agreed, but is there a way to avoid this wastage. apart from migrating data to LFS and then again to HDFS. Example: We have a 500MB file with block size 128 MB i.e. 4 blocks on HDFS. Now since we changed block size to 256MB, how would we make the file on HDFS to have 2 blocks of 256MB instead of 4. Please suggest.  ... View more