[YARN-10540] Node page is broken in YARN UI1 and UI2 including RMWebService api for nodes

• Type: Task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.2.2
• Fix Version/s: 3.2.2, 3.4.0, 3.3.1, 2.10.2
• Component/s: webapp
• Target Version/s: 3.2.2
• Assignee: Jim Brennan
• Reporter: Sunil G
• Created: 19/Dec/20 17:32
• Updated: 10/Jun/21 08:15
• Resolved: 22/Dec/20 00:02

Description

YARN-10450 added changes in NodeInfo class.

Various exceptions are showing while accessing UI2 and UI1 NODE pages. 

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)
 

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)

Issue Links

• is broken by: YARN-10450 Add cpu and memory utilization per node and cluster-wide metrics