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From "Suma Shivaprasad (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-15472) Fix NPE in DefaultUpgradeComponentsFinder
Date Tue, 15 May 2018 21:09:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-15472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16476473#comment-16476473
] 

Suma Shivaprasad commented on HADOOP-15472:
-------------------------------------------

Raised this in HADOOP project by mistake instead of YARN. Closing it as Invalid here and will
raise an issue in YARN

> Fix NPE in DefaultUpgradeComponentsFinder 
> ------------------------------------------
>
>                 Key: HADOOP-15472
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15472
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Suma Shivaprasad
>            Assignee: Suma Shivaprasad
>            Priority: Major
>
> 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}



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