[AMBARI-23919] Stack upgrade from 2.6.5 to 3.0.0 fails because WebHCat component doesn't exist

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.7.0
• Component/s: ambari-server
• Labels: pull-request-available
• Assignee: Jonathan Hurley
• Reporter: Jonathan Hurley
• Created: 21/May/18 18:36
• Updated: 12/Jul/18 12:17
• Resolved: 22/May/18 13:19

Description

When upgrading from one stack to another where the target stack is missing services or components, we hit the following NPE:

2018-05-21 14:27:59,197  WARN [ambari-client-thread-153] HttpChannel:507 - /api/v1/clusters/fff/upgrades
java.lang.NullPointerException
  at org.apache.ambari.server.state.UpgradeHelper.setDisplayNames(UpgradeHelper.java:838)
  at org.apache.ambari.server.state.UpgradeHelper.createSequence(UpgradeHelper.java:467)
  at org.apache.ambari.server.controller.internal.UpgradeResourceProvider.createUpgrade(UpgradeResourceProvider.java:721)
  at org.apache.ambari.server.controller.internal.UpgradeResourceProvider$1.invoke(UpgradeResourceProvider.java:348)
  at org.apache.ambari.server.controller.internal.UpgradeResourceProvider$1.invoke(UpgradeResourceProvider.java:340)
  at org.apache.ambari.server.controller.internal.AbstractResourceProvider.invokeWithRetry(AbstractResourceProvider.java:465)
  at org.apache.ambari.server.controller.internal.AbstractResourceProvider.createResources(AbstractResourceProvider.java:288)
  at org.apache.ambari.server.controller.internal.UpgradeResourceProvider.createResources(UpgradeResourceProvider.java:340)
  at org.apache.ambari.server.controller.internal.ClusterControllerImpl.createResources(ClusterControllerImpl.java:296)
  at org.apache.ambari.server.api.services.persistence.PersistenceManagerImpl.create(PersistenceManagerImpl.java:97)
  at org.apache.ambari.server.api.handlers.CreateHandler.persist(CreateHandler.java:50)
  at org.apache.ambari.server.api.handlers.BaseManagementHandler.handleRequest(BaseManagementHandler.java:68)
  at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:144)
  at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:163)
  at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:127)
  at org.apache.ambari.server.api.services.UpgradeService.createUpgrade(UpgradeService.java:59)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)

Issue Links

• links to: GitHub Pull Request #1345