Major Description
When we added -crc option to dfs -get (aka dfs -copyToLocal) the absence of this command-line option implies not copying the crc file associated with hdfs file. However, if the checksum file already exists, it will not correspond with the newly copied data file, and opening it would cause checksum failure. The solution is to remove any existing crc file corresponding to the data file if -crc option is not given for -get. Patch forthcoming.