[AMBARI-15726] Removing unknown host from cluster throws NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: ambari-server
• Assignee: Ajit Kumar
• Reporter: Ajit Kumar
• Created: 06/Apr/16 03:49
• Updated: 07/Apr/16 06:15
• Resolved: 07/Apr/16 00:43

Description

Removing unknown host from cluster throws NPE exception:
API call:

curl -u admin:admin  -H 'X-Requested-By: ambari' -X DELETE  http://c6401.ambari.apache.org:8080/api/v1/clusters/a/hosts/c6402.ambari.apache.org
{
  "status": 500,
  "message": "Server Error"
}

stack trace:

06 Apr 2016 01:12:34,724  WARN [qtp-ambari-client-95] ServletHandler:628 - /api/v1/clusters/a/hosts/c6402.ambari.apache.org
java.lang.NullPointerException
        at java.util.HashSet.<init>(HashSet.java:118)
        at org.apache.ambari.server.state.cluster.ClustersImpl.deleteHost(ClustersImpl.java:843)
        at org.apache.ambari.server.controller.internal.HostResourceProvider.deleteHosts(HostResourceProvider.java:889)
        at org.apache.ambari.server.orm.AmbariJpaLocalTxnInterceptor.invoke(AmbariJpaLocalTxnInterceptor.java:128)
        at org.apache.ambari.server.controller.internal.HostResourceProvider$4.invoke(HostResourceProvider.java:344)
        at org.apache.ambari.server.controller.internal.HostResourceProvider$4.invoke(HostResourceProvider.java:341)
        at org.apache.ambari.server.controller.internal.AbstractResourceProvider.invokeWithRetry(AbstractResourceProvider.java:451)
        at org.apache.ambari.server.controller.internal.AbstractResourceProvider.modifyResources(AbstractResourceProvider.java:332)
        at org.apache.ambari.server.controller.internal.HostResourceProvider.deleteResourcesAuthorized(HostResourceProvider.java:341)
        at org.apache.ambari.server.controller.internal.AbstractAuthorizedResourceProvider.deleteResources(AbstractAuthorizedResourceProvider.java:332)
        at org.apache.ambari.server.controller.internal.ClusterControllerImpl.deleteResources(ClusterControllerImpl.java:330)
        at org.apache.ambari.server.api.services.persistence.PersistenceManagerImpl.delete(PersistenceManagerImpl.java:132)
        at org.apache.ambari.server.api.handlers.DeleteHandler.persist(DeleteHandler.java:45)
        at org.apache.ambari.server.api.handlers.BaseManagementHandler.handleRequest(BaseManagementHandler.java:72)
        at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:145)
        at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:119)
        at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:83)
        at org.apache.ambari.server.api.services.HostService.deleteHost(HostService.java:194)

API should return 404 NoSuchResourceException.

Issue Links

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