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https://issues.apache.org/jira/browse/YARN-11471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17854248#comment-17854248
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Ayush Saxena commented on YARN-11471:
-------------------------------------
[~slfan1989]/[~elgoiri] There are some 180 test failing in Yarn
https://ci-hadoop.apache.org/view/Hadoop/job/hadoop-qbt-trunk-java8-linux-x86_64/1604/testReport/junit/
One such example:
https://ci-hadoop.apache.org/view/Hadoop/job/hadoop-qbt-trunk-java8-linux-x86_64/1604/testReport/junit/org.apache.hadoop.yarn.server.federation.policies/TestRouterPolicyFacade/testGetHomeSubcluster/
I think the NPE is coming from the code introduced here:
{noformat}
public void clearCache() {
this.cache.clear();
this.cache = null;
}
{noformat}
I think the cache is {{null}} when we call clear, I think adding a {{null}}
check before calling clear might solve the problem.
Can you folks Please check, if this is related
> FederationStateStoreFacade Cache Support Caffeine
> -------------------------------------------------
>
> Key: YARN-11471
> URL: https://issues.apache.org/jira/browse/YARN-11471
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: federation
> Affects Versions: 3.4.0
> Reporter: Shilun Fan
> Assignee: Shilun Fan
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.1, 3.5.0
>
>
> FederationStateStoreFacade Cache Support Caffeine
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