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https://issues.apache.org/jira/browse/YARN-11111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dinesh Chitlangia resolved YARN-11111.
--------------------------------------
Fix Version/s: 3.3.4
Resolution: Fixed
> Recovery failure when node-label configure-type transit from
> delegated-centralized to centralized
> -------------------------------------------------------------------------------------------------
>
> Key: YARN-11111
> URL: https://issues.apache.org/jira/browse/YARN-11111
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Junfan Zhang
> Assignee: Junfan Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.4
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> When i make configure-type from delegated-centralized to centralized in
> yarn-site.xml and restart the RM, it failed.
> The error stacktrace is as follows
>
> {code:txt}
> 2022-04-13 14:44:14,885 WARN org.apache.hadoop.ha.ActiveStandbyElector:
> Exception handling the winning of election
> org.apache.hadoop.ha.ServiceFailedException: RM could not transition to Active
> at
> org.apache.hadoop.yarn.server.resourcemanager.ActiveStandbyElectorBasedElectorService.becomeActive(ActiveStandbyElectorBasedElectorService.java:146)
> at
> org.apache.hadoop.ha.ActiveStandbyElector.becomeActive(ActiveStandbyElector.java:901)
> at
> org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:476)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:610)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:508)
> Caused by: org.apache.hadoop.ha.ServiceFailedException: Error when
> transitioning to Active mode
> at
> org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToActive(AdminService.java:333)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ActiveStandbyElectorBasedElectorService.becomeActive(ActiveStandbyElectorBasedElectorService.java:144)
> ... 4 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.ReplaceLabelsOnNodeRequestPBImpl.initNodeToLabels(ReplaceLabelsOnNodeRequestPBImpl.java:61)
> at
> org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.ReplaceLabelsOnNodeRequestPBImpl.getNodeToLabels(ReplaceLabelsOnNodeRequestPBImpl.java:138)
> at
> org.apache.hadoop.yarn.nodelabels.store.op.NodeLabelMirrorOp.recover(NodeLabelMirrorOp.java:76)
> at
> org.apache.hadoop.yarn.nodelabels.store.op.NodeLabelMirrorOp.recover(NodeLabelMirrorOp.java:41)
> at
> org.apache.hadoop.yarn.nodelabels.store.AbstractFSNodeStore.loadFromMirror(AbstractFSNodeStore.java:120)
> at
> org.apache.hadoop.yarn.nodelabels.store.AbstractFSNodeStore.recoverFromStore(AbstractFSNodeStore.java:149)
> at
> org.apache.hadoop.yarn.nodelabels.FileSystemNodeLabelsStore.recover(FileSystemNodeLabelsStore.java:106)
> at
> org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager.initNodeLabelStore(CommonNodeLabelsManager.java:252)
> at
> org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager.serviceStart(CommonNodeLabelsManager.java:266)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:910)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:1278)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1319)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1315)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1762)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToActive(ResourceManager.java:1315)
> at
> org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToActive(AdminService.java:328)
> ... 5 more
> 2022-04-13 14:44:14,886 INFO org.apache.hadoop.ha.ActiveStandbyElector:
> Trying to re-establish ZK session
> {code}
> When i digging into the codebase, found that the node and labels mapping is
> stored in the nodelabel.mirror file when configured the type of centralized.
> So the content of nodelabel.mirror file is as follows
> 1. the node-label list
> 2. the node to label mapping (only exist when configured the type of
> centralized)
>
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