Jing Zhao created HADOOP-10295:
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Summary: Allow distcp to automatically identify the checksum type
of source files and use it for the target
Key: HADOOP-10295
URL: https://issues.apache.org/jira/browse/HADOOP-10295
Project: Hadoop Common
Issue Type: Improvement
Affects Versions: 2.2.0
Reporter: Jing Zhao
Assignee: Jing Zhao
Currently while doing distcp, users can use "-Ddfs.checksum.type" to specify
the checksum type in the target FS. This works fine if all the source files are
using the same checksum type. If files in the source cluster have mixed types
of checksum, users have to either use "-skipcrccheck" or have checksum
mismatching exception. Thus we may need to consider adding a new option to
distcp so that it can automatically identify the original checksum type of each
source file and use the same checksum type in the target FS.
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