Takashi Ohnishi created YARN-4544:
-------------------------------------
Summary: All the log messages about rolling monitoring interval
are shown with the WARN level
Key: YARN-4544
URL: https://issues.apache.org/jira/browse/YARN-4544
Project: Hadoop YARN
Issue Type: Improvement
Components: log-aggregation, nodemanager
Affects Versions: 2.7.1
Reporter: Takashi Ohnishi
About yarn.nodemanager.log-aggregation.roll-monitoring-interval-seconds, there
are three log messages corresponding to the value set to this parameter, but
all of them are shown with the WARN level.
(a) disabled (default)
{code}
2016-01-05 22:19:29,062 WARN
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggreg
ation.AppLogAggregatorImpl: rollingMonitorInterval is set as -1. The log
rolling mornitoring inte rval is disabled. The logs will be aggregated
after this application is finished.
{code}
(b) enabled
{code}
2016-01-06 00:41:15,808 WARN
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.AppLogAggregatorImpl:
rollingMonitorInterval is set as 7200. The logs will be aggregated every 7200
seconds
{code}
(c) enabled but wrong configuration
{code}
2016-01-06 00:39:50,820 WARN
org.apache.hadoop.yarn.server.nodemanager.containermanager.logaggregation.AppLogAggregatorImpl:
rollingMonitorIntervall should be more than or equal to 3600 seconds. Using
3600 seconds instead.
{code}
I think it is better to output with WARN only in case (c), but it is ok to
output with INFO in case (a) and (b).
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