Suraj Nayak created HADOOP-13114:
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Summary: 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
Reporter: Suraj Nayak
Assignee: Suraj Nayak
Priority: Minor
Fix For: 3.0.0
DistCp utility should have capability to store data in user specified
compressed format. This avoids one hop of compressing data after transfer.
Backup strategies to different cluster gets benefit saving one IO operation,
time and effort.
* Create a option -compressOutput with defaulting to
{{org.apache.avro.file.BZip2Codec}}.
* Users will be able to change codec with {{-D
mapreduce.output.fileoutputformat.compress.codec=org.apache.avro.file.SnappyCodec}}
* If distcp compression is enables, 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.
This JIRA is similar to
[HADOOP-8065|https://issues.apache.org/jira/browse/HADOOP-8065].
[HADOOP-8065|https://issues.apache.org/jira/browse/HADOOP-8065] aims to
compress data *during transit* which is a huge effort. This JIRA is simplified
to enable to user to compress data when the data lands on target filesystem.
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