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https://issues.apache.org/jira/browse/HDDS-1756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885250#comment-16885250
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Nanda kumar commented on HDDS-1756:
-----------------------------------
NPE is thrown when the datanode is processing the delete container command for
a container which is not present (already deleted).
We will make delete container an idempotent operation in datanode.
> DeleteContainerCommandHandler fails with NPE
> --------------------------------------------
>
> Key: HDDS-1756
> URL: https://issues.apache.org/jira/browse/HDDS-1756
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode
> Affects Versions: 0.4.0
> Reporter: Mukul Kumar Singh
> Assignee: Nanda kumar
> Priority: Major
> Labels: MiniOzoneChaosCluster
>
> DeleteContainerCommandHandler fails with NPE
> {code}
> Thread[Command processor
> thread,5,org.apache.hadoop.ozone.TestMiniChaosOzoneCluster]
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.container.ozoneimpl.ContainerController.getHandler(ContainerController.java:138)
> at
> org.apache.hadoop.ozone.container.ozoneimpl.ContainerController.deleteContainer(ContainerController.java:128)
> at
> org.apache.hadoop.ozone.container.common.statemachine.commandhandler.DeleteContainerCommandHandler.handle(DeleteContainerCommandHandler.java:57)
> at
> org.apache.hadoop.ozone.container.common.statemachine.commandhandler.CommandDispatcher.handle(CommandDispatcher.java:93)
> at
> org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.lambda$initCommandHandlerThread$1(DatanodeStateMachine.java:432)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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