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https://issues.apache.org/jira/browse/YARN-800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13681838#comment-13681838
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Zhijie Shen commented on YARN-800:
----------------------------------
Did a quick local test, and found the link was not broken. It seems that the
default value has already been in yarn-default.xml
{code}
<property>
<description>The hostname of the RM.</description>
<name>yarn.resourcemanager.hostname</name>
<value>0.0.0.0</value>
</property>
{code}
{code}
<property>
<description>The address of the RM web application.</description>
<name>yarn.resourcemanager.webapp.address</name>
<value>${yarn.resourcemanager.hostname}:8088</value>
</property>
{code}
and YarnConfiguration
{code}
public static final String RM_WEBAPP_ADDRESS =
RM_PREFIX + "webapp.address";
public static final int DEFAULT_RM_WEBAPP_PORT = 8088;
public static final String DEFAULT_RM_WEBAPP_ADDRESS = "0.0.0.0:" +
DEFAULT_RM_WEBAPP_PORT;
{code}
Looked into the code, it seems to be related to "yarn.web-proxy.address". In
WebAppProxyServlet,
{code}
resp.setStatus(client.executeMethod(config, method));
{code}
tries to connect the proxy host to show the application webpage. If
"yarn.web-proxy.address" is not set, RM will become the proxy, and its address
will be $\{yarn.resourcemanager.hostname\}:8088 as well.
Maybe it is good to check the configuration of "yarn.web-proxy.address"
> Clicking on an AM link for a running app leads to a HTTP 500
> ------------------------------------------------------------
>
> Key: YARN-800
> URL: https://issues.apache.org/jira/browse/YARN-800
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.1.0-beta
> Reporter: Arpit Gupta
> Priority: Critical
>
> Clicking the AM link tries to open up a page with url like
> http://hostname:8088/proxy/application_1370886527995_0645/
> and this leads to an HTTP 500
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