[
https://issues.apache.org/jira/browse/HDDS-15464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Krishna Kumar Asawa reassigned HDDS-15464:
------------------------------------------
Assignee: Priyesh K
> 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
> Assignee: Priyesh K
> Priority: Major
>
> 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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