[
https://issues.apache.org/jira/browse/HADOOP-8065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014095#comment-14014095
]
Ken Krugler commented on HADOOP-8065:
-------------------------------------
I think this is reasonable functionality to add to distcp.
For reference (based on user input) see what Amazon has added to their version
of distcp (S3distcp):
http://docs.aws.amazon.com/ElasticMapReduce/latest/DeveloperGuide/UsingEMR_s3distcp.html
They support a --outputCodec <codec> parameter, to specify what compression to
use.
> discp 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
> Priority: Minor
> Labels: distcp
> Fix For: 0.20.2
>
> Attachments: 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.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
