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Yongjun Zhang commented on HADOOP-8065:
---------------------------------------
HI [~snayakm], not sure whether you are still working on this issue, I just uploaded a rebased
version.
Hi [~raviprak], thanks for your earlier review, any thinking about pushing this forward?
Thanks much.
> 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, HADOOP-8065.005.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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