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https://issues.apache.org/jira/browse/YARN-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13840863#comment-13840863
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Vinod Kumar Vavilapalli commented on YARN-1450:
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bq. 1. What is the usage of UnmanagedAM? Support new special apps which need a
local AM or support all apps? If the later it is far from complete, so either
disable this test or write&use a simple AM in test.
UnmanagedAM application was written to help developers debug their YARN
applications/frameworks by running AM on the client machine.
bq. 2. Is distributedshell.ApplicationMaster not supposed to be launched
standalone and must only be called by distributedshell.Client?
Not every AM ever runs by itself. More often than not, client sets up
something, then submits an app to the RM which then starts the AM. In case of
unmanaged AM, the flow should be similar, client sets up stuff, then submits
the app but runs the AM locally. It's the part about client setting up stuff
that is missing today and that IMO needs fixing.
> TestUnmanagedAMLauncher#testDSShell fails on trunk
> --------------------------------------------------
>
> Key: YARN-1450
> URL: https://issues.apache.org/jira/browse/YARN-1450
> Project: Hadoop YARN
> Issue Type: Bug
> Components: applications/distributed-shell
> Reporter: Akira AJISAKA
> Assignee: Binglin Chang
> Attachments: YARN-1450.v1.patch, YARN-1450.v2.patch,
> YARN-1450.v3.patch, YARN-1450.v4.patch,
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher-output.txt,
>
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher.txt
>
>
> TestUnmanagedAMLauncher fails on trunk. The console output is
> {code}
> Running
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher
> Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 35.937 sec
> <<< FAILURE! - in
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher
> testDSShell(org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher)
> Time elapsed: 14.558 sec <<< ERROR!
> java.lang.RuntimeException: Failed to receive final expected state in
> ApplicationReport, CurrentState=ACCEPTED,
> ExpectedStates=FINISHED,FAILED,KILLED
> at
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.UnmanagedAMLauncher.monitorApplication(UnmanagedAMLauncher.java:447)
> at
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.UnmanagedAMLauncher.run(UnmanagedAMLauncher.java:352)
> at
> org.apache.hadoop.yarn.applications.unmanagedamlauncher.TestUnmanagedAMLauncher.testDSShell(TestUnmanagedAMLauncher.java:145)
> {code}
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