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From "Jonathan Eagles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-3961) Tez UI web.xml tries to reach out to java.sun.com for validation after moving to jetty-9
Date Mon, 08 Oct 2018 21:29:00 GMT

    [ https://issues.apache.org/jira/browse/TEZ-3961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16642516#comment-16642516
] 

Jonathan Eagles commented on TEZ-3961:
--------------------------------------

[~kshukla], this looks similar to YARN-8401. Can you provide a patch?

> Tez UI web.xml tries to reach out to java.sun.com for validation after moving to jetty-9
> ----------------------------------------------------------------------------------------
>
>                 Key: TEZ-3961
>                 URL: https://issues.apache.org/jira/browse/TEZ-3961
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.9.1
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>            Priority: Major
>
> Tez UI can throw a 503 error when hosted on a server that cannot reach public IPs like
java.sun.com which are listed as servers for DTDs in web.xml.  This behavior change comes
from moving to jetty 9 (Tez and Hadoop 3.0) which removed provided schemas that were being
shipped with earlier versions. It is suboptimal even in cases where public IPs are accessible
to fetch the DTD for a very very simple web.xml file. We can choose to either remove the DTD
validation or add dependency explicitly to org.eclipse.jetty.toolchain ยป jetty-osgi-servlet-api
to allow for this jetty change to not affect the behavior of tez-ui.



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