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George Liaw edited comment on TEZ-3488 at 11/2/16 4:59 PM: ----------------------------------------------------------- [~Sreenath] [~jeagles] What I meant is that if you look at this try catch for setCorsHeaders(), you can do a check for default ports and strip them: https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/app/web/AMWebController.java#L127 Could be rewritten as: {code:java} try { URL url = new URL(historyUrlBase); if (url.getPort() == 80 || url.getPort() == 443) { origin = url.getProtocol() + "://" + url.getHost(); } else { origin = url.getProtocol() + "://" + url.getHost() + ":" + url.getPort(); } } catch (MalformedURLException e) { if (LOG.isDebugEnabled()) { LOG.debug("Invalid url set for tez history url base: " + historyUrlBase, e); } } {code} was (Author: gliaw): [~Sreenath] [~jeagles] What I meant is that if you look at this try catch for setCorsHeaders(), you can do a check for default ports and strip them: https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/app/web/AMWebController.java#L127 {code:java} try { URL url = new URL(historyUrlBase); if (url.getPort() == 80 || url.getPort() == 443) { origin = url.getProtocol() + "://" + url.getHost(); } else { origin = url.getProtocol() + "://" + url.getHost() + ":" + url.getPort(); } } catch (MalformedURLException e) { if (LOG.isDebugEnabled()) { LOG.debug("Invalid url set for tez history url base: " + historyUrlBase, e); } } {code} > Tez UI Vertex 404 > ----------------- > > Key: TEZ-3488 > URL: https://issues.apache.org/jira/browse/TEZ-3488 > Project: Apache Tez > Issue Type: Bug > Affects Versions: 0.8.4 > Reporter: George Liaw > > When we're trying to view vertices for a running job, the Vertex page will > show a 404 error saying: > "Could not retrieve expected data from @ <url>" > And the Vertex Counter page will show: > "Counters unavailable" > and > "Error code: Unknown, message: Resource Manager (RM) out of reach. Either > it's down or CORS is not enabled" > The RMs are up and CORS is enabled. If we go to the displayed url, we get the > expected XML with the application info. When the DAG finishes running, those > errors go away and the pages display fine. Any idea what's going on here? -- This message was sent by Atlassian JIRA (v6.3.4#6332)