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https://issues.apache.org/jira/browse/YARN-11923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18053799#comment-18053799
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Susheel Gupta commented on YARN-11923:
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Steps to repro:
1. Start Spark on YARN:
spark3-shell --conf spark.master=yarn
2. Send TRACE to Spark UI:
curl -v -X TRACE http://<hostname>:4040
3. We observe HTTP 302 found.
> YARN web proxy AmIpFilter allows TRACE, bypassing sparkUI TRACE block
> ---------------------------------------------------------------------
>
> Key: YARN-11923
> URL: https://issues.apache.org/jira/browse/YARN-11923
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Reporter: Susheel Gupta
> Assignee: Susheel Gupta
> Priority: Major
>
> In yarn mode, sparkUI responds to http TRACE with 302 redirect. The redirect
> happens in AmIpFilter, so the TRACE request is getting processed before spark
> jetty handler can reject it. This causes security scanners to report TRACE
> enabled.
> In local mode there is no yarn proxy filter, so requests go directly to spark
> Jetty servlet. SPARK‑5983 adds TRACE filter correctly returning 405.
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