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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1194) map output should not do block level compression
Date Tue, 03 Apr 2007 03:52:32 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Owen O'Malley updated HADOOP-1194:

    Fix Version/s: 0.13.0
         Assignee: Owen O'Malley
       Issue Type: Improvement  (was: Bug)

I interpret this request as the default for map.output.compression.type to be BLOCK rather
than the value of io.seqfile.compression.type. Is that correct, Runping?

> map output should not do block level compression
> ------------------------------------------------
>                 Key: HADOOP-1194
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1194
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.12.2
>            Reporter: Runping Qi
>         Assigned To: Owen O'Malley
>             Fix For: 0.13.0
> If the user sets to compress the map output, the compression style should be record level,
not block level, since using block level compression for map outputs causes performance degragation

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