LoggingResearch created YARN-11727:
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Summary: Expose Service Disabling Information for End-Users
Key: YARN-11727
URL: https://issues.apache.org/jira/browse/YARN-11727
Project: Hadoop YARN
Issue Type: Improvement
Components: yarn
Affects Versions: 3.3.6
Environment: Version: {{`3.3.6`}}
Location:
{{{}`hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogDeletionService.java`{}}}，
in {{`scheduleLogDeletionTasks`}} method, lines 258-280.
Reporter: LoggingResearch
Attachments: TestAggregatedLogDeletionService.java,
original-vs-log-enhanced.md
The {{AggregatedLogDeletionService}} class in the Hadoop YARN framework is
responsible for managing log aggregation and deletion. However, if the
configuration parameter {{yarn.log-aggregation-enable}} is not set to
{{{}true{}}}, the log aggregation service is disabled by default without any
notification to the end-user. This can lead to confusion, especially for users
who are unfamiliar with the configuration details but expect the service to be
active. To improve user experience and avoid potential issues caused by
unintentional misconfigurations, it is important to provide clear logging
information when the service is disabled.
*Expected Behavior:*
When the {{yarn.log-aggregation-enable}} parameter is set to {{false}} (the
default value), the system should log an informative message indicating that
the log aggregation service is not enabled. This will help users recognize the
issue and adjust the configuration accordingly.
*How-to-Fix:*
We propose to expose the information about the service status by adding logging
statements. When the log aggregation service is not enabled due to the
{{yarn.log-aggregation-enable}} parameter being set to {{{}false{}}}, a log
message should be generated to inform the user.
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