[AMBARI-25378] 500 advisor error with ambari metrics mode set to distributed with OneFS

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.7.5
• Component/s: ambari-sever
• Assignee: Attila Magyar
• Reporter: Kaitlyn Johnson
• Created: 13/Sep/19 22:09
• Updated: 14/Oct/19 09:44
• Resolved: 14/Oct/19 09:44

Description

OneFS with Ambari Metrics when set to distributed mode creates a 500 stack advisor error when trying to configure any settings in ambari or add or remove services. This error only goes away after configuring Ambari Metrics back to embedded mode.

Traceback is:
/var/run/ambari-server/stack-recommendations/2/stackadvisor.err
 
Traceback (most recent call last):
  File "/var/lib/ambari-server/resources/scripts/stack_advisor.py", line 190, in <module>
    main(sys.argv)
  File "/var/lib/ambari-server/resources/scripts/stack_advisor.py", line 142, in main
    result = stackAdvisor.validateConfigurations(services, hosts)
  File "/var/lib/ambari-server/resources/scripts/../stacks/stack_advisor.py", line 1079, in validateConfigurations
    validationItems = self.getConfigurationsValidationItems(services, hosts)
  File "/var/lib/ambari-server/resources/scripts/../stacks/stack_advisor.py", line 1468, in getConfigurationsValidationItems
    items.extend(self.getConfigurationsValidationItemsForService(configurations, recommendedDefaults, service, services, hosts))
  File "/var/lib/ambari-server/resources/scripts/../stacks/stack_advisor.py", line 1521, in getConfigurationsValidationItemsForService
    items.extend(serviceAdvisor.getServiceConfigurationsValidationItems(configurations, recommendedDefaults, services, hosts))
  File "/var/lib/ambari-server/resources/stacks/HDP/3.0/services/AMBARI_METRICS/service_advisor.py", line 218, in
getServiceConfigurationsValidationItems
    return validator.validateListOfConfigUsingMethod(configurations, recommendedDefaults, services, hosts, validator.validators)
  File "/var/lib/ambari-server/resources/scripts/../stacks/stack_advisor.py", line 1491, in validateListOfConfigUsingMethod
    validationItems = method(siteProperties, siteRecommendations, configurations, services, hosts)
  File "/var/lib/ambari-server/resources/stacks/HDP/3.0/services/AMBARI_METRICS/service_advisor.py", line 591, in
validateAmsHbaseSiteConfigurationsFromHDP206
    elif collectorHostName not in dn_hosts and distributed.lower() == "true":
TypeError: argument of type 'NoneType' is not iterable