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https://issues.apache.org/jira/browse/TEZ-3488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622451#comment-15622451
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Jonathan Eagles commented on TEZ-3488:
--------------------------------------
Support for cross origin filters in the resource manager proxy service was
added as part of https://issues.apache.org/jira/browse/YARN-4009 was first
released as part of Hadoop 2.7.2. This does support multiple initializers but
should only need to be turned on at the RM. [~gliaw], can you confirm what
version of hadoop and if that version of hadoop has cross origin support in the
RM.
> 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?
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