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From "Yan Zhou (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1501) need to investigate the impact of compression on pig performance
Date Wed, 01 Sep 2010 01:44:54 GMT

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

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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