MapR 5.0 Documentation : dfs-attributes dir

Each directory in MapR storage contains a hidden file called .dfs_attributes that controls compression and chunk size. To change these attributes, change the corresponding values in the file.

Valid values:

  • Compression: true or false
  • Chunk size (in bytes): a multiple of 65535 (64 K) or zero (no chunks). Example: 131072

You can also set compression and chunksize using the hadoop mfs command.