Kuhu Shukla created TEZ-3961:
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Summary: 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
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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