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https://issues.apache.org/jira/browse/PIG-1501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904868#action_12904868
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Yan Zhou commented on PIG-1501:
-------------------------------

To be more eaccurate, the default compression would be gzip if the compression 
was made on by default.  Currently, the compression has to be specified and 
takes no default value. This is to ask user to take full appreciation of pros 
and cons of either compression method.

> need to investigate the impact of compression on pig performance
> ----------------------------------------------------------------
>
>                 Key: PIG-1501
>                 URL: https://issues.apache.org/jira/browse/PIG-1501
>             Project: Pig
>          Issue Type: Test
>            Reporter: Olga Natkovich
>            Assignee: Yan Zhou
>             Fix For: 0.8.0
>
>         Attachments: compress_perf_data.txt, compress_perf_data_2.txt, 
> PIG-1501.patch, PIG-1501.patch, PIG-1501.patch
>
>
> We would like to understand how compressing map results as well as well as 
> reducer output in a chain of MR jobs impacts performance. We can use PigMix 
> queries for this investigation.

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