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  1. Hadoop YARN
  2. YARN-8300

Fix NPE in DefaultUpgradeComponentsFinder

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.1.1
    • Fix Version/s: 3.2.0, 3.1.1
    • Component/s: yarn
    • Labels:
      None

      Description

      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

      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)
      

        Attachments

        1. YARN-8300.3.patch
          8 kB
          Suma Shivaprasad
        2. YARN-8300.2.patch
          8 kB
          Suma Shivaprasad
        3. YARN-8300.1.patch
          7 kB
          Suma Shivaprasad

          Activity

            People

            • Assignee:
              suma.shivaprasad Suma Shivaprasad
              Reporter:
              suma.shivaprasad Suma Shivaprasad
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              Dates

              • Created:
                Updated:
                Resolved: