sodonnel commented on PR #3892:
URL: https://github.com/apache/ozone/pull/3892#issuecomment-1293388050
I tried this out with the OZONE_ROOT_LOGGER setting at various levels and it
looks good:
```
bash-4.2$ OZONE_ROOT_LOGGER=DEBUG,console ozone sh volume create /vol1
2022-10-27 11:27:35,434 [main] DEBUG lib.MutableMetricsFactory: field
org.apache.hadoop.metrics2.lib.MutableRate
org.apache.hadoop.security.UserGroupInformation$UgiMetrics.getGroups with
annotation @org.apache.hadoop.metrics2.annotation.Metric(always=false,
sampleName="Ops", valueName="Time", about="", interval=10, type=DEFAULT,
value={"GetGroups"})
2022-10-27 11:27:35,437 [main] DEBUG lib.MutableMetricsFactory: field
org.apache.hadoop.metrics2.lib.MutableRate
org.apache.hadoop.security.UserGroupInformation$UgiMetrics.loginFailure with
annotation @org.apache.hadoop.metrics2.annotation.Metric(always=false,
sampleName="Ops", valueName="Time", about="", interval=10, type=DEFAULT,
value={"Rate of failed kerberos logins and latency (milliseconds)"})
2022-10-27 11:27:35,437 [main] DEBUG lib.MutableMetricsFactory: field
org.apache.hadoop.metrics2.lib.MutableRate
org.apache.hadoop.security.UserGroupInformation$UgiMetrics.loginSuccess with
annotation @org.apache.hadoop.metrics2.annotation.Metric(always=false,
sampleName="Ops", valueName="Time", about="", interval=10, type=DEFAULT,
value={"Rate of successful kerberos logins and latency (milliseconds)"})
2022-10-27 11:27:35,437 [main] DEBUG lib.MutableMetricsFactory: field
private org.apache.hadoop.metrics2.lib.MutableGaugeInt
org.apache.hadoop.security.UserGroupInformation$UgiMetrics.renewalFailures with
annotation @org.apache.hadoop.metrics2.annotation.Metric(always=false,
sampleName="Ops", valueName="Time", about="", interval=10, type=DEFAULT,
value={"Renewal failures since last successful login"})
2022-10-27 11:27:35,438 [main] DEBUG lib.MutableMetricsFactory: field
private org.apache.hadoop.metrics2.lib.MutableGaugeLong
org.apache.hadoop.security.UserGroupInformation$UgiMetrics.renewalFailuresTotal
with annotation @org.apache.hadoop.metrics2.annotation.Metric(always=false,
sampleName="Ops", valueName="Time", about="", interval=10, type=DEFAULT,
value={"Renewal failures since startup"})
2022-10-27 11:27:35,438 [main] DEBUG impl.MetricsSystemImpl: UgiMetrics,
User and group related metrics
2022-10-27 11:27:35,516 [main] DEBUG util.Shell: setsid exited with exit
code 0
...
2022-10-27 11:27:35,901 [main] DEBUG ipc.Client: removing client from cache:
Client-cc25afd97c55431b91894353158cbb5e
2022-10-27 11:27:35,901 [main] DEBUG ipc.Client: stopping actual client
because no more references remain: Client-cc25afd97c55431b91894353158cbb5e
2022-10-27 11:27:35,901 [main] DEBUG ipc.Client: Stopping client
2022-10-27 11:27:35,902 [IPC Client (1937693946) connection to
om/172.30.0.6:9862 from hadoop] DEBUG ipc.Client: IPC Client (1937693946)
connection to om/172.30.0.6:9862 from hadoop: closed
2022-10-27 11:27:35,902 [IPC Client (1937693946) connection to
om/172.30.0.6:9862 from hadoop] DEBUG ipc.Client: IPC Client (1937693946)
connection to om/172.30.0.6:9862 from hadoop: stopped, remaining connections 0
bash-4.2$ OZONE_ROOT_LOGGER=INFO,console ozone sh volume create /vol2
2022-10-27 11:27:49,551 [main] INFO rpc.RpcClient: Creating Volume: vol2,
with hadoop as owner and space quota set to -1 bytes, counts quota set to -1
bash-4.2$ OZONE_ROOT_LOGGER=OFF,console ozone sh volume create /vol2
VOLUME_ALREADY_EXISTS Volume already exists
bash-4.2$ OZONE_ROOT_LOGGER=OFF,console ozone sh volume create /vol3
bash-4.2$
```
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