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https://issues.apache.org/jira/browse/HADOOP-1194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12486249
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Hadoop QA commented on HADOOP-1194:
-----------------------------------
+1, because
http://issues.apache.org/jira/secure/attachment/12354810/HADOOP-1194_20070403_1.patch
applied and successfully tested against trunk revision
http://svn.apache.org/repos/asf/lucene/hadoop/trunk/524929. Results are at
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch
> 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: Arun C Murthy
> Fix For: 0.13.0
>
> Attachments: HADOOP-1194_20070403_1.patch
>
>
> 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 significantly.
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