Soumitra Sulav created HDDS-15464:
-------------------------------------
Summary: DN log filled with NullPointerException on Volume Failed
scenario
Key: HDDS-15464
URL: https://issues.apache.org/jira/browse/HDDS-15464
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Datanode
Affects Versions: 2.1.0
Reporter: Soumitra Sulav
Datanode logs is filled with
{code:java}
2026-06-02 10:20:16,709 ERROR [Timer for 'HddsDatanode' metrics
system]-org.apache.hadoop.metrics2.lib.MethodMetric: Error invoking method
getCommitted
java.lang.reflect.InvocationTargetException
at jdk.internal.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:569)
at
org.apache.hadoop.metrics2.lib.MethodMetric$2.snapshot(MethodMetric.java:111)
at
org.apache.hadoop.metrics2.lib.MethodMetric.snapshot(MethodMetric.java:142)
at
org.apache.hadoop.metrics2.lib.MetricsRegistry.snapshot(MetricsRegistry.java:447)
at
org.apache.hadoop.metrics2.lib.MetricsSourceBuilder$1.getMetrics(MetricsSourceBuilder.java:89)
at
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:200)
at
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.snapshotMetrics(MetricsSystemImpl.java:419)
at
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.sampleMetrics(MetricsSystemImpl.java:406)
at
org.apache.hadoop.metrics2.impl.MetricsSystemImpl.onTimerEvent(MetricsSystemImpl.java:381)
at
org.apache.hadoop.metrics2.impl.MetricsSystemImpl$4.run(MetricsSystemImpl.java:368)
at java.base/java.util.TimerThread.mainLoop(Timer.java:566)
at java.base/java.util.TimerThread.run(Timer.java:516)
Caused by: java.lang.NullPointerException: Cannot invoke
"java.util.concurrent.atomic.AtomicLong.get()" because "this.committedBytes" is
null {code}
On volume failed scenario
{code:java}
# ls /mnt/disk0/hadoop-ozone/datanode/data
ls: cannot access '/mnt/disk0/hadoop-ozone/datanode/data': Input/output error
{code}
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