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https://issues.apache.org/jira/browse/YARN-5028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16362390#comment-16362390
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Gergo Repas commented on YARN-5028:
-----------------------------------
[~yufeigu] The two fields that are needed for the unit tests to pass are:
# AMContainerResourceRequests
** needed for multiple TestWorkPreservingRMRestart tests
** if this field is not present the following exception is being thrown:
[https://github.com/apache/hadoop/blob/0c5d7d71a80bccd4ad7eab269d0727b999606a7e/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMAppManager.java#L494]
# ApplicationType
** needed for TestRMRestart
** the exception when this field is not present:
{code}java.lang.NullPointerException
at org.apache.hadoop.util.StringUtils.toLowerCase(StringUtils.java:1127)
at
org.apache.hadoop.yarn.server.resourcemanager.ClientRMService.getApplications(ClientRMService.java:869)
at
org.apache.hadoop.yarn.server.resourcemanager.TestRMRestart.testRMRestartGetApplicationList(TestRMRestart.java:1017)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{code}
> RMStateStore should trim down app state for completed applications
> ------------------------------------------------------------------
>
> Key: YARN-5028
> URL: https://issues.apache.org/jira/browse/YARN-5028
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: resourcemanager
> Affects Versions: 2.8.0
> Reporter: Karthik Kambatla
> Assignee: Gergo Repas
> Priority: Major
> Attachments: YARN-5028.000.patch, YARN-5028.001.patch,
> YARN-5028.002.patch
>
>
> RMStateStore stores enough information to recover applications in case of a
> restart. The store also retains this information for completed applications
> to serve their status to REST, WebUI, Java and CLI clients. We don't need all
> the information we store today to serve application status; for instance, we
> don't need the {{ApplicationSubmissionContext}}.
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