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https://issues.apache.org/jira/browse/MAPREDUCE-4093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Devaraj K updated MAPREDUCE-4093:
---------------------------------
Status: Patch Available (was: Open)
I have updated the patch for this.
> Improve RM WebApp start up when proxy address is not set
> --------------------------------------------------------
>
> Key: MAPREDUCE-4093
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4093
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 2.0.0, 3.0.0
> Reporter: Devaraj K
> Attachments: MAPREDUCE-4093.patch
>
>
> {code:title=ResourceManager.java|borderStyle=solid}
> protected void startWepApp() {
> Builder<ApplicationMasterService> builder =
> WebApps.$for("cluster", ApplicationMasterService.class, masterService,
> "ws").at(
> this.conf.get(YarnConfiguration.RM_WEBAPP_ADDRESS,
> YarnConfiguration.DEFAULT_RM_WEBAPP_ADDRESS));
> if(YarnConfiguration.getRMWebAppHostAndPort(conf).
> equals(YarnConfiguration.getProxyHostAndPort(conf))) {
> AppReportFetcher fetcher = new AppReportFetcher(conf,
> getClientRMService());
> builder.withServlet(ProxyUriUtils.PROXY_SERVLET_NAME,
> ProxyUriUtils.PROXY_PATH_SPEC, WebAppProxyServlet.class);
> builder.withAttribute(WebAppProxy.FETCHER_ATTRIBUTE, fetcher);
> String proxy = YarnConfiguration.getProxyHostAndPort(conf);
> String[] proxyParts = proxy.split(":");
> builder.withAttribute(WebAppProxy.PROXY_HOST_ATTRIBUTE, proxyParts[0]);
> }
> webApp = builder.start(new RMWebApp(this));
> }
> {code}
> In the above code, YarnConfiguration.getProxyHostAndPort(conf) is invoking
> twice. getProxyHostAndPort() internally invokes getRMWebAppHostAndPort()
> which resolves RM web app address when proxy address is not set.
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