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https://issues.apache.org/jira/browse/YARN-5257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yufei Gu updated YARN-5257:
---------------------------
    Description: 
The following code contain potential problems:
{code}
Unreleased Resource: Streams    TopCLI.java:738
Unreleased Resource: Streams    Graph.java:189
Unreleased Resource: Streams    CgroupsLCEResourcesHandler.java:291
Unreleased Resource: Streams    UnmanagedAMLauncher.java:195
Unreleased Resource: Streams    CGroupsHandlerImpl.java:319
Unreleased Resource: Streams    TrafficController.java:629
Portability Flaw: Locale Dependent Comparison   TimelineWebServices.java:421
Null Dereference        ApplicationImpl.java:465
Null Dereference        VisualizeStateMachine.java:52
Null Dereference        ContainerImpl.java:1089
Null Dereference        QueueManager.java:219
Null Dereference        QueueManager.java:232
Null Dereference        ResourceLocalizationService.java:1016
Null Dereference        ResourceLocalizationService.java:1023
Null Dereference        ResourceLocalizationService.java:1040
Null Dereference        ResourceLocalizationService.java:1052
Null Dereference        ProcfsBasedProcessTree.java:802
Null Dereference        TimelineClientImpl.java:639
Null Dereference        LocalizedResource.java:206
{code}

  was:
The following code contain potential problems:
{code}
Unreleased Resource: Streams    TopCLI.java:738
Unreleased Resource: Streams    Graph.java:189
Unreleased Resource: Streams    CgroupsLCEResourcesHandler.java:291
Unreleased Resource: Streams    UnmanagedAMLauncher.java:195
Unreleased Resource: Streams    CGroupsHandlerImpl.java:319
Unreleased Resource: Streams    TrafficController.java:629
Portability Flaw: Locale Dependent Comparison   TimelineWebServices.java:421
Null Dereference        ApplicationImpl.java:465
Null Dereference        VisualizeStateMachine.java:52
Null Dereference        ContainerImpl.java:1089
Null Dereference        QueueManager.java:219
Null Dereference        QueueManager.java:232
Null Dereference        ResourceLocalizationService.java:1016
Null Dereference        ResourceLocalizationService.java:1023
Null Dereference        ResourceLocalizationService.java:1040
Null Dereference        ResourceLocalizationService.java:1052
Null Dereference        ProcfsBasedProcessTree.java:802
Null Dereference        TimelineClientImpl.java:639
Null Dereference        LocalizedResource.java:206
Code Correctness: Double-Checked Locking        ResourceHandlerModule.java:142
Code Correctness: Double-Checked Locking        RMPolicyProvider.java:51
{code}


> Fix all Bad Practices
> ---------------------
>
>                 Key: YARN-5257
>                 URL: https://issues.apache.org/jira/browse/YARN-5257
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.9.0
>            Reporter: Yufei Gu
>            Assignee: Yufei Gu
>
> The following code contain potential problems:
> {code}
> Unreleased Resource: Streams  TopCLI.java:738
> Unreleased Resource: Streams  Graph.java:189
> Unreleased Resource: Streams  CgroupsLCEResourcesHandler.java:291
> Unreleased Resource: Streams  UnmanagedAMLauncher.java:195
> Unreleased Resource: Streams  CGroupsHandlerImpl.java:319
> Unreleased Resource: Streams  TrafficController.java:629
> Portability Flaw: Locale Dependent Comparison TimelineWebServices.java:421
> Null Dereference      ApplicationImpl.java:465
> Null Dereference      VisualizeStateMachine.java:52
> Null Dereference      ContainerImpl.java:1089
> Null Dereference      QueueManager.java:219
> Null Dereference      QueueManager.java:232
> Null Dereference      ResourceLocalizationService.java:1016
> Null Dereference      ResourceLocalizationService.java:1023
> Null Dereference      ResourceLocalizationService.java:1040
> Null Dereference      ResourceLocalizationService.java:1052
> Null Dereference      ProcfsBasedProcessTree.java:802
> Null Dereference      TimelineClientImpl.java:639
> Null Dereference      LocalizedResource.java:206
> {code}



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