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https://issues.apache.org/jira/browse/YARN-10540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17252245#comment-17252245
]
Sunil G commented on YARN-10540:
--------------------------------
I brought up this local cluster in my MAC. And I can see below log in NM.
Since ResourceCalculatorPlugin can't be initialized, NodeUtilization object
will be NULL. And that caused the issue mentioned in this jira.
So far, no one was using NodeUtilization in NodeInfo, and this issue was never
uncovered so far.
{code:java}
2020-12-19 22:37:05,096 WARN
org.apache.hadoop.yarn.util.ResourceCalculatorPlugin: Failed to instantiate
default resource calculator. Could not determine OS
2020-12-19 22:37:05,096 INFO
org.apache.hadoop.yarn.server.nodemanager.NodeResourceMonitorImpl: Using
ResourceCalculatorPlugin : null {code}
> Node page is broken in YARN UI1 and UI2 including RMWebService api for nodes
> ----------------------------------------------------------------------------
>
> Key: YARN-10540
> URL: https://issues.apache.org/jira/browse/YARN-10540
> Project: Hadoop YARN
> Issue Type: Task
> Components: webapp
> Affects Versions: 3.2.2
> Reporter: Sunil G
> Priority: Blocker
> Attachments: Screenshot 2020-12-19 at 11.01.43 PM.png, Screenshot
> 2020-12-19 at 11.02.14 PM.png
>
>
> YARN-10450 added changes in NodeInfo class.
> Various exceptions are showing while accessing UI2 and UI1 NODE pages.
> {code:java}
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.NodeInfo.<init>(NodeInfo.java:103)
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.NodesPage$NodesBlock.render(NodesPage.java:164)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:69)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:79)
> at org.apache.hadoop.yarn.webapp.View.render(View.java:243)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlPage$Page.subView(HtmlPage.java:49)
> at
> org.apache.hadoop.yarn.webapp.hamlet2.HamletImpl$EImp._v(HamletImpl.java:117)
> at org.apache.hadoop.yarn.webapp.hamlet2.Hamlet$TD.__(Hamlet.java:848)
> at
> org.apache.hadoop.yarn.webapp.view.TwoColumnLayout.render(TwoColumnLayout.java:71)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlPage.render(HtmlPage.java:82)
> at
> org.apache.hadoop.yarn.webapp.Controller.render(Controller.java:216)
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.RmController.nodes(RmController.java:70)
> {code}
> {code:java}
> 2020-12-19 22:55:54,846 WARN
> org.apache.hadoop.yarn.webapp.GenericExceptionHandler: INTERNAL_SERVER_ERROR
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.NodeInfo.<init>(NodeInfo.java:103)
> at
> org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebServices.getNodes(RMWebServices.java:450)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> {code}
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