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Jonathan Eagles commented on TEZ-3488: -------------------------------------- Leaving withCredentials is preferred since there is a movement to consider moving credentials into the request headers since passing credentials as part of the URL is a security concern. This will allow the Tez UI to be protected from this design change. > 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)