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https://issues.apache.org/jira/browse/YARN-10540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17254114#comment-17254114
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Sunil G commented on YARN-10540:
--------------------------------
[~hexiaoqiao], This is working for me in the latest build.
You are missing the cors configurations in YARN. If you add them, this will
load.
{code:java}
<property>
<name>hadoop.http.filter.initializers</name>
<value>org.apache.hadoop.security.HttpCrossOriginFilterInitializer</value>
</property><property>
<description>Enable/disable the cross-origin (CORS) filter.</description>
<name>hadoop.http.cross-origin.enabled</name>
<value>true</value>
</property><property>
<description>Comma separated list of origins that are allowed for web
services needing cross-origin (CORS) support. Wildcards (*) and patterns
allowed</description>
<name>hadoop.http.cross-origin.allowed-origins</name>
<value>*</value>
</property><property>
<description>Comma separated list of methods that are allowed for web
services needing cross-origin (CORS) support.</description>
<name>hadoop.http.cross-origin.allowed-methods</name>
<value>GET,POST,HEAD</value>
</property><property>
<description>Comma separated list of headers that are allowed for web
services needing cross-origin (CORS) support.</description>
<name>hadoop.http.cross-origin.allowed-headers</name>
<value>X-Requested-With,Content-Type,Accept,Origin</value>
</property><property>
<description>The number of seconds a pre-flighted request can be cached
for web services needing cross-origin (CORS) support.</description>
<name>hadoop.http.cross-origin.max-age</name>
<value>1800</value>
</property> {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
> Assignee: Jim Brennan
> Priority: Critical
> Fix For: 3.4.0, 3.3.1, 3.1.5, 2.10.2, 3.2.3
>
> Attachments: Mac-Yarn-UI.png, Screenshot 2020-12-19 at 11.01.43
> PM.png, Screenshot 2020-12-19 at 11.02.14 PM.png, Screenshot 2020-12-23 at
> 8.24.42 PM.png, YARN-10540.001.patch, Yarn-UI-Ubuntu.png, osx-yarn-ui2.png,
> yarnodes.png, yarnui2onubuntu.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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