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https://issues.apache.org/jira/browse/CHUKWA-146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12699942#action_12699942
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Eric Yang commented on CHUKWA-146:
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+1 on the design.
> All hadoop logs should use a different RecordType
> -------------------------------------------------
>
> Key: CHUKWA-146
> URL: https://issues.apache.org/jira/browse/CHUKWA-146
> Project: Hadoop Chukwa
> Issue Type: Improvement
> Reporter: Jerome Boulon
> Priority: Critical
>
> All hadoop logs are using the same RecordType, so only 1 Reducer is used to
> process all log files (other than DN,NN,Audit).
> This cause a SKU issue at the M/R level.
> So all hadoop logs should use a different RecordType.
> Note:
> - using the cluster information in the ChukwaRecordPartitioner will also help.
> - using a predefine list of recordType/reducer association will also help by
> avoiding to have 2 log RecordType going to the same reducer,
> the dynamic affectation ( ( hashCode() & Integer.MAX_VALUE) % numReduceTasks)
> could be used at a fallback mechanism
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