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Adam Antal updated YARN-9813: ----------------------------- Attachment: YARN-9813.002.patch > RM does not start on JDK11 when UIv2 is enabled > ----------------------------------------------- > > Key: YARN-9813 > URL: https://issues.apache.org/jira/browse/YARN-9813 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager, yarn > Affects Versions: 3.1.2 > Reporter: Adam Antal > Assignee: Adam Antal > Priority: Critical > Attachments: YARN-9813.001.patch, YARN-9813.002.patch > > > Starting a ResourceManager on JDK11 with UIv2 is enabled, RM startup fails > with the following message: > {noformat} > Error starting ResourceManager > java.lang.ClassCastException: class > jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class > java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and > java.net.URLClassLoader are in module java.base of loader 'bootstrap') > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startWepApp(ResourceManager.java:1190) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:1333) > at > org.apache.hadoop.service.AbstractService.start(AbstractService.java:194) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1531) > {noformat} > It is a known issue that the systemClassLoader is not URLClassLoader anymore > from JDK9 (see related UT failure: YARN-9512). -- This message was sent by Atlassian Jira (v8.3.2#803003) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org