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https://issues.apache.org/jira/browse/MAPREDUCE-3398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158971#comment-13158971
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Siddharth Seth commented on MAPREDUCE-3398:
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The NM adds apps to the keep-alive list when it gets a FINISH_APPLICATION from
the resource manager (Around line 452 of the patch - in
{{NodeStatusUpdaterImpl}}). It uses the configured token-renewal timeout set
via configuration - the same value that is used by the RM. Token renewal should
only be happening if security and log-aggregation are enabled.
> Log Aggregation broken in Secure Mode
> -------------------------------------
>
> Key: MAPREDUCE-3398
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3398
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, nodemanager
> Affects Versions: 0.23.0
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Priority: Critical
> Fix For: 0.23.1
>
> Attachments: MR3398_v1.txt
>
>
> Log aggregation in secure mode does not work with MAPREDUCE-2977. The
> nodemanager relies on the users credentials to write out logs to HDFS. These
> credentials are currently cancelled once a job completes, before the NM can
> write out the logs.
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