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https://issues.apache.org/jira/browse/CHUKWA-276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerome Boulon updated CHUKWA-276:
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Component/s: Data Processors
Assignee: Jerome Boulon
> Hourly and Daily rolling should use a single reducer
> ----------------------------------------------------
>
> Key: CHUKWA-276
> URL: https://issues.apache.org/jira/browse/CHUKWA-276
> Project: Hadoop Chukwa
> Issue Type: Improvement
> Components: Data Processors
> Reporter: Jerome Boulon
> Assignee: Jerome Boulon
>
> Hourly and Daily rolling should not use more than one reducer and they are
> currently relying on the default parameter to be correct.
> <property>
> <name>mapred.reduce.tasks</name>
> <value>1</value>
> <description>The default number of reduce tasks per job. Typically set
> to a prime close to the number of available hosts. Ignored when
> mapred.job.tracker is "local".
> </description>
> </property>
> This should be forced within the Rolling class in order to avoid any issue.
> And ideally, the code should be changed to allow more than one reducer.
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