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https://issues.apache.org/jira/browse/YARN-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Kanter resolved YARN-2942.
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Resolution: Won't Fix
Target Version/s: (was: 2.8.0)
Closing this as "Won't Fix" given we have MAPREDUCE-6415.
> Aggregated Log Files should be combined
> ---------------------------------------
>
> Key: YARN-2942
> URL: https://issues.apache.org/jira/browse/YARN-2942
> Project: Hadoop YARN
> Issue Type: New Feature
> Affects Versions: 2.6.0
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Attachments: CombinedAggregatedLogsProposal_v3.pdf,
> CombinedAggregatedLogsProposal_v6.pdf, CombinedAggregatedLogsProposal_v7.pdf,
> CompactedAggregatedLogsProposal_v1.pdf,
> CompactedAggregatedLogsProposal_v2.pdf,
> ConcatableAggregatedLogsProposal_v4.pdf,
> ConcatableAggregatedLogsProposal_v5.pdf,
> ConcatableAggregatedLogsProposal_v8.pdf, YARN-2942-preliminary.001.patch,
> YARN-2942-preliminary.002.patch, YARN-2942.001.patch, YARN-2942.002.patch,
> YARN-2942.003.patch
>
>
> Turning on log aggregation allows users to easily store container logs in
> HDFS and subsequently view them in the YARN web UIs from a central place.
> Currently, there is a separate log file for each Node Manager. This can be a
> problem for HDFS if you have a cluster with many nodes as you’ll slowly start
> accumulating many (possibly small) files per YARN application. The current
> “solution” for this problem is to configure YARN (actually the JHS) to
> automatically delete these files after some amount of time.
> We should improve this by compacting the per-node aggregated log files into
> one log file per application.
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