discp should have an option to compress data while copying.
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Key: HADOOP-8065
URL: https://issues.apache.org/jira/browse/HADOOP-8065
Project: Hadoop Common
Issue Type: Improvement
Components: fs
Affects Versions: 0.20.2
Reporter: Suresh Antony
Priority: Minor
Fix For: 0.20.2
We would like compress the data while transferring from our source system to
target system. One way to do this is to write a map/reduce job to compress that
after/before being transferred. This looks inefficient.
Since distcp already reading writing data it would be better if it can
accomplish while doing this.
Flip side of this is that distcp -update option can not check file size before
copying data. It can only check for the existence of file.
So I propose if -compress option is given then file size is not checked.
Also when we copy file appropriate extension needs to be added to file
depending on compression type.
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