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https://issues.apache.org/jira/browse/HADOOP-13114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravi Prakash updated HADOOP-13114:
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Attachment: HADOOP-13114.05.patch
Hi Suraj!
Thanks a lot for all your efforts to improve DistCp. My sincere apologies for
not paying attention to this issue. I'm sorry I was a bit busy when you had
asked and then never got back to this issue. Yongjun seems to want this in, so
we'll make another push for it.
Here's a rebase for the latest trunk. I'll try to review and test it in the
coming days.
> DistCp should have option to compress data on write
> ---------------------------------------------------
>
> Key: HADOOP-13114
> URL: https://issues.apache.org/jira/browse/HADOOP-13114
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Affects Versions: 2.8.0, 2.7.3, 3.0.0-alpha1
> Reporter: Suraj Nayak
> Assignee: Suraj Nayak
> Priority: Minor
> Labels: distcp
> Attachments: HADOOP-13114-trunk_2016-05-07-1.patch,
> HADOOP-13114-trunk_2016-05-08-1.patch, HADOOP-13114-trunk_2016-05-10-1.patch,
> HADOOP-13114-trunk_2016-05-12-1.patch, HADOOP-13114.05.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> DistCp utility should have capability to store data in user specified
> compression format. This avoids one hop of compressing data after transfer.
> Backup strategies to different cluster also get benefit of saving one IO
> operation to and from HDFS, thus saving resources, time and effort.
> * Create an option -compressOutput defaulting to
> {{org.apache.hadoop.io.compress.BZip2Codec}}.
> * Users will be able to change codec with {{-D
> mapreduce.output.fileoutputformat.compress.codec=org.apache.hadoop.io.compress.GzipCodec}}
> * If distcp compression is enabled, suffix the filenames with default codec
> extension to indicate the file is compressed. Thus users can be aware of what
> codec was used to compress the data.
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