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https://issues.apache.org/jira/browse/YARN-2583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xuan Gong updated YARN-2583:
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Description:
Currently, AggregatedLogDeletionService will delete old logs from HDFS. It will
check the cut-off-time, if all logs for this application is older than this
cut-off-time. The app-log-dir from HDFS will be deleted. This will not work for
LRS. We expect a LRS application can keep running for a long time.
Two different scenarios:
1) If we configured the rollingIntervalSeconds, the new log file will be always
uploaded to HDFS. The number of log files for this application will become
larger and larger. And there is no log files will be deleted.
2) If we did not configure the rollingIntervalSeconds, the log file can only be
uploaded to HDFS after the application is finished. It is very possible that
the logs are uploaded after the cut-off-time. It will cause problem because at
that time the app-log-dir for this application in HDFS has been deleted.
was:Currently, AggregatedLogDeletionService will delete old logs from HDFS.
It will directly delete the app-log-dir from HDFS. This will not work for LRS.
We expect a LRS application can keep running for a long time. Deleting the
app-log-dir for the LRS applications is not a right way to handle it.
> Modify the LogDeletionService to support Log aggregation for LRS
> ----------------------------------------------------------------
>
> Key: YARN-2583
> URL: https://issues.apache.org/jira/browse/YARN-2583
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager, resourcemanager
> Reporter: Xuan Gong
> Assignee: Xuan Gong
>
> Currently, AggregatedLogDeletionService will delete old logs from HDFS. It
> will check the cut-off-time, if all logs for this application is older than
> this cut-off-time. The app-log-dir from HDFS will be deleted. This will not
> work for LRS. We expect a LRS application can keep running for a long time.
> Two different scenarios:
> 1) If we configured the rollingIntervalSeconds, the new log file will be
> always uploaded to HDFS. The number of log files for this application will
> become larger and larger. And there is no log files will be deleted.
> 2) If we did not configure the rollingIntervalSeconds, the log file can only
> be uploaded to HDFS after the application is finished. It is very possible
> that the logs are uploaded after the cut-off-time. It will cause problem
> because at that time the app-log-dir for this application in HDFS has been
> deleted.
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