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Sreenath Somarajapuram commented on TEZ-3488: --------------------------------------------- [~hitesh] I'v improved the above documentation. Please review. Working on the other parts of the doc. bq. Is there any security aspect raised if we use "*" instead of the origin host as currently being done? We cannot use "*" when withCredentials is set to true in the request. As explained here https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Requests_with_credentials, withCredentials is required for making calls that are aware of HTTP cookies and HTTP Authentication information. It was added as part of TEZ-1799. [~jeagles] Considering that we are not sending any credentials as of now in the headers, should we remove the flag for the time being? > 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)