[jira] [Created] (YARN-9629) Support configurable MIN_LOG_ROLLING_INTERVAL

["Adam Antal (JIRA)" <ji...@apache.org>]

Adam Antal created YARN-9629:
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             Summary: Support configurable MIN_LOG_ROLLING_INTERVAL
                 Key: YARN-9629
                 URL: https://issues.apache.org/jira/browse/YARN-9629
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: log-aggregation, nodemanager, yarn
    Affects Versions: 3.2.0
            Reporter: Adam Antal
            Assignee: Adam Antal


One of the log-aggregation parameter, the minimum valid value for {{yarn.nodemanager.log-aggregation.roll-monitoring-interval-seconds}} is MIN_LOG_ROLLING_INTERVAL - it has been hardcoded since its addition in YARN-2583. 

It has been empirically set as 1 hour, as lower values would too frequently put the NodeManagers under pressure. For bigger clusters that is indeed a valid limitation, but for smaller clusters it makes sense and a valid customer usecase to use lower values, even like not so lower 30 mins. At this point this can only be achieved by setting {{yarn.nodemanager.log-aggregation.debug-enabled}}, which I believe should be kept as debug purposes.

I'm suggesting to make this min configurable, although a warning should be logged in the NodeManager startup when this value is lower than 1 hour.



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