[AMBARI-5510] NPE in ganglia property provider

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 1.6.0
• Assignee: Sumit Mohanty
• Reporter: Sumit Mohanty
• Created: 18/Apr/14 15:37
• Updated: 18/Apr/14 17:01
• Resolved: 18/Apr/14 17:01

Description

Hit NPE when accessing api/vi/clusters/c1/hosts/c6403.ambari.apache.org.

The repro steps are not simple as I was trying to close the browser during Add Host Wizard progress and then trying to delete the host to start the wizard again.

In any case, we can add some null checks to avoid the NPE.

00:30:36,028  WARN [qtp762119098-106] ServletHandler:514 - /api/v1/clusters/c1/hosts/c6403.ambari.apache.org
java.lang.NullPointerException
        at org.apache.ambari.server.controller.ganglia.GangliaPropertyProvider$RRDRequest.convertToNumber(GangliaPropertyProvider.java:621)
        at org.apache.ambari.server.controller.ganglia.GangliaPropertyProvider$RRDRequest.populateResources(GangliaPropertyProvider.java:490)
        at org.apache.ambari.server.controller.ganglia.GangliaPropertyProvider.populateResources(GangliaPropertyProvider.java:120)
        at org.apache.ambari.server.controller.internal.ClusterControllerImpl.populateResources(ClusterControllerImpl.java:129)
        at org.apache.ambari.server.api.query.QueryImpl.queryForResources(QueryImpl.java:336)
        at org.apache.ambari.server.api.query.QueryImpl.execute(QueryImpl.java:184)
        at org.apache.ambari.server.api.handlers.ReadHandler.handleRequest(ReadHandler.java:67)
        at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:116)
        at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:80)
        at org.apache.ambari.server.api.services.HostService.getHost(HostService.java:80)
        at sun.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)

Issue Links

• links to: ReviewBoard