dfs -get should remove existing crc file if -crc is not specified
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Key: HADOOP-866
URL: https://issues.apache.org/jira/browse/HADOOP-866
Project: Hadoop
Issue Type: Bug
Components: fs
Affects Versions: 0.10.0
Environment: All
Reporter: Milind Bhandarkar
Assigned To: Milind Bhandarkar
Fix For: 0.11.0
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.
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