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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1501) need to investigate the impact of compression on pig performance
Date Wed, 01 Sep 2010 00:06:57 GMT

    [ https://issues.apache.org/jira/browse/PIG-1501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904843#action_12904843
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Ashutosh Chauhan commented on PIG-1501:
---------------------------------------

If its not backward-incompatible then is there any specific reason to default pig.tmpfilecompression
to false. This seems to be a useful feature, so it should be true by default, no ?

> 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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