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https://issues.apache.org/jira/browse/YARN-4773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15192685#comment-15192685
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Bibin A Chundatt commented on YARN-4773:
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[~hex108]/[~jlowe]
{quote}
however we do not need call AppLogAggregatorImpl#cleanOldLogs because there
have been no containers' logs uploaded before.
{quote}
While aggregation was going on NM got killed and restarted again .Will thr be a
possiblity for <HOSTNAME>.tmp file exists in folder??
> Log aggregation performs extraneous filesystem operations when rolling log
> aggregation is disabled
> --------------------------------------------------------------------------------------------------
>
> Key: YARN-4773
> URL: https://issues.apache.org/jira/browse/YARN-4773
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.6.0
> Reporter: Jason Lowe
> Assignee: Jun Gong
> Priority: Minor
> Attachments: YARN-4773.01.patch
>
>
> I noticed when log aggregation occurs for an application the nodemanager is
> listing the application's log directory in HDFS. Apparently this is for
> removing old logs before uploading new ones. This is a wasteful operation
> when rolling log aggregation is disabled, since there will be no prior logs
> in HDFS -- aggregation only occurs once when rolling log aggregation is
> disabled.
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