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https://issues.apache.org/jira/browse/HADOOP-8065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15275173#comment-15275173
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Suraj Nayak commented on HADOOP-8065:
-------------------------------------
Thanks [~raviprak]. I have created JIRA
[HADOOP-13114|https://issues.apache.org/jira/browse/HADOOP-13114] and added you
as watcher. On your comment on {{codec}}, you are right, I was in mid of
extracting the default codec extension that needed to be appended to the end of
the file. Will upload the patch once my local build gives +1.
> distcp should have an option to compress data while copying.
> ------------------------------------------------------------
>
> 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
> Assignee: Suraj Nayak
> Priority: Minor
> Labels: distcp
> Fix For: 0.20.2
>
> Attachments: HADOOP-8065-trunk_2015-11-03.patch,
> HADOOP-8065-trunk_2015-11-04.patch, HADOOP-8065-trunk_2016-04-29-4.patch,
> patch.distcp.2012-02-10
>
>
> 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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