Ahmed Hussein created HADOOP-17449:
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Summary: Jetty 9.4.20 can't generate resourceBase with NPE
Key: HADOOP-17449
URL: https://issues.apache.org/jira/browse/HADOOP-17449
Project: Hadoop Common
Issue Type: Bug
Reporter: Ahmed Hussein
While I was looking into TestDistributedShell logs, I noticed the following
{{Warning}}
{code:bash}
2020-12-29 16:22:26,379 INFO [Time-limited test] handler.ContextHandler
(ContextHandler.java:doStart(824)) - Started
o.e.j.s.ServletContextHandler@75389179{logs,/logs,file:///hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-distributedshell/target/log,AVAILABLE}
2020-12-29 16:22:26,380 INFO [Time-limited test] handler.ContextHandler
(ContextHandler.java:doStart(824)) - Started
o.e.j.s.ServletContextHandler@116ed75c{static,/static,jar:file:~/.m2/repository/org/apache/hadoop/hadoop-yarn-common/3.4.0-SNAPSHOT/hadoop-yarn-common-3.4.0-SNAPSHOT.jar!/webapps/static,AVAILABLE}
2020-12-29 16:22:26,390 WARN [Time-limited test] webapp.WebInfConfiguration
(WebInfConfiguration.java:getCanonicalNameForWebAppTmpDir(794)) - Can't
generate resourceBase as part of webapp tmp dir name:
java.lang.NullPointerException
2020-12-29 16:22:26,469 INFO [Time-limited test] util.TypeUtil
(TypeUtil.java:<clinit>(201)) - JVM Runtime does not support Modules
{code}
For OS X, it looks like {{webAppContext.setBaseResource}} and accessing the
sources from a jar file will cause {{file.resource.toURI().getPath()}} to
return {{null}} for {{jar:-urls}}
I checked that changing the jetty-version from {{9.4.20.v20190813}} to
something above {{9.4.21}} (aka., 9.4.23.v20191118) fixes the warning.
[~inigoiri], [~aajisaka], [~weichiu], [~ayushtkn]
Do you guys think we should consider upgrading Jetty to the [latest versions of
9.4.x|https://mvnrepository.com/artifact/org.eclipse.jetty/jetty-webapp] like
9.4.35?
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