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https://issues.apache.org/jira/browse/YARN-3087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Li Lu updated YARN-3087:
------------------------
Attachment: YARN-3087-022315.patch
Since this issue is blocking some of us on the aggregator side, I did some
investigation on this. In this patch I set up a separate HttpServer2 to hold
the aggregator REST servlet. In this way we can avoid binding two yarn web apps
inside one NM process. I've also modified the web service a little bit to work
with HttpServer2.addJerseyResourcePackage(). The whole service now works in the
same fashion as the NameNodeHttpServer (and NamenodeWebHdfsMethods for detailed
REST calls). Lastly, I modified our maven file a little bit since HttpServer2
requires a folder for each launched web server. Comments/suggestions are more
than welcome.
> [Aggregator implementation] the REST server (web server) for per-node
> aggregator does not work if it runs inside node manager
> -----------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-3087
> URL: https://issues.apache.org/jira/browse/YARN-3087
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Reporter: Sangjin Lee
> Assignee: Devaraj K
> Attachments: YARN-3087-022315.patch
>
>
> This is related to YARN-3030. YARN-3030 sets up a per-node timeline
> aggregator and the associated REST server. It runs fine as a standalone
> process, but does not work if it runs inside the node manager due to possible
> collisions of servlet mapping.
> Exception:
> {noformat}
> org.apache.hadoop.yarn.webapp.WebAppException: /v2/timeline: controller for
> v2 not found
> at org.apache.hadoop.yarn.webapp.Router.resolveDefault(Router.java:232)
> at org.apache.hadoop.yarn.webapp.Router.resolve(Router.java:140)
> at org.apache.hadoop.yarn.webapp.Dispatcher.service(Dispatcher.java:134)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263)
> at
> com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178)
> at
> com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
> at
> com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:900)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:834)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:795)
> ...
> {noformat}
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