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Eric Yang edited comment on YARN-8300 at 5/16/18 4:44 PM: ---------------------------------------------------------- Thank you [~suma.shivaprasad] for the patch. Thank you [~giovanni.fumarola] for the review. +1 I committed this to branch 3.1 and trunk. was (Author: eyang): Thank you [~suma.shivaprasad] for the patch. Thank you [~giovanni.fumarola] for the review. I committed this to branch 3.1 and trunk. > Fix NPE in DefaultUpgradeComponentsFinder > ------------------------------------------ > > Key: YARN-8300 > URL: https://issues.apache.org/jira/browse/YARN-8300 > Project: Hadoop YARN > Issue Type: Bug > Components: yarn > Affects Versions: 3.1.1 > Reporter: Suma Shivaprasad > Assignee: Suma Shivaprasad > Priority: Major > Fix For: 3.2.0, 3.1.1 > > Attachments: YARN-8300.1.patch, YARN-8300.2.patch, YARN-8300.3.patch > > > In current upgrades for Yarn native services, we do not support > addition/deletion of compoents during upgrade. On trying to upgrade with the > same number of components in target spec as the current service spec but with > the one of the components having a new target spec and name, see the > following NPE in service AM logs > {noformat} > 2018-05-15 00:10:41,489 [IPC Server handler 0 on 37488] ERROR > service.ClientAMService - Error while trying to upgrade service {} > java.lang.NullPointerException > at > org.apache.hadoop.yarn.service.UpgradeComponentsFinder$DefaultUpgradeComponentsFinder.lambda$findTargetComponentSpecs$0(UpgradeComponentsFinder.java:103) > at java.util.ArrayList.forEach(ArrayList.java:1257) > at > org.apache.hadoop.yarn.service.UpgradeComponentsFinder$DefaultUpgradeComponentsFinder.findTargetComponentSpecs(UpgradeComponentsFinder.java:100) > at > org.apache.hadoop.yarn.service.ServiceManager.processUpgradeRequest(ServiceManager.java:259) > at > org.apache.hadoop.yarn.service.ClientAMService.upgrade(ClientAMService.java:163) > at > org.apache.hadoop.yarn.service.impl.pb.service.ClientAMProtocolPBServiceImpl.upgradeService(ClientAMProtocolPBServiceImpl.java:81) > at > org.apache.hadoop.yarn.proto.ClientAMProtocol$ClientAMProtocolService$2.callBlockingMethod(ClientAMProtocol.java:5972) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:523) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:991) > at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:872) > at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:818) > 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:1682) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2678) > {noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org