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https://issues.apache.org/jira/browse/HDDS-2350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal resolved HDDS-2350.
---------------------------------
Resolution: Duplicate
> NullPointerException seen in datanode log while writing data
> ------------------------------------------------------------
>
> Key: HDDS-2350
> URL: https://issues.apache.org/jira/browse/HDDS-2350
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Nilotpal Nandi
> Priority: Major
>
> NullPointerException exception seen in datanode log while writing 10GB data.
> There is one pipelinee with factor 3 while writing data.
> {noformat}
> 2019-10-23 11:25:45,674 ERROR
> org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: Error getting metrics
> from source
> ratis_core.ratis_leader.a23fb300-4c1e-420f-a21e-7e73d0c22cbe@group-4CA404C938C2
> java.lang.NullPointerException
> at
> org.apache.ratis.server.impl.RaftLeaderMetrics.lambda$null$2(RaftLeaderMetrics.java:86)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.snapshotAllMetrics(HadoopMetrics2Reporter.java:239)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.getMetrics(HadoopMetrics2Reporter.java:219)
> 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$4.run(MetricsSystemImpl.java:368)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> 2019-10-23 11:25:55,673 ERROR
> org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: Error getting metrics
> from source
> ratis_core.ratis_leader.a23fb300-4c1e-420f-a21e-7e73d0c22cbe@group-4CA404C938C2
> java.lang.NullPointerException
> at
> org.apache.ratis.server.impl.RaftLeaderMetrics.lambda$null$2(RaftLeaderMetrics.java:86)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.snapshotAllMetrics(HadoopMetrics2Reporter.java:239)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.getMetrics(HadoopMetrics2Reporter.java:219)
> 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$4.run(MetricsSystemImpl.java:368)
> at java.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505)
> 2019-10-23 11:26:05,674 ERROR
> org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: Error getting metrics
> from source
> ratis_core.ratis_leader.a23fb300-4c1e-420f-a21e-7e73d0c22cbe@group-4CA404C938C2
> java.lang.NullPointerException
> at
> org.apache.ratis.server.impl.RaftLeaderMetrics.lambda$null$2(RaftLeaderMetrics.java:86)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.snapshotAllMetrics(HadoopMetrics2Reporter.java:239)
> at
> com.github.joshelser.dropwizard.metrics.hadoop.HadoopMetrics2Reporter.getMetrics(HadoopMetrics2Reporter.java:219)
> 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.util.TimerThread.mainLoop(Timer.java:555)
> at java.util.TimerThread.run(Timer.java:505){noformat}
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