[AMBARI-24658] Cluster creation fails with KeyError in get_cluster_host_info method of ClusterTopologyCache.py

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Duplicate
• Affects Version/s: 2.7.0
• Fix Version/s: 2.7.3
• Component/s: ambari-agent
• Assignee: Andrew Onischuk
• Reporter: Siddharth Wagle
• Created: 18/Sep/18 19:36
• Updated: 22/Oct/18 21:00
• Resolved: 16/Oct/18 11:15

Description

Cluster creation fails with KeyError in get_cluster_host_info method of ClusterTopologyCache.py'

Here is the stacktrace:

ambari_agent - CustomServiceOrchestrator.py - [4840] - root - ERROR - Caught an exception while executing custom service command: <type 'exceptions.KeyError'>: 7; 7#012Traceback (most recent call last):#012 File "/usr/lib/ambari-agent/lib/ambari_agent/CustomServiceOrchestrator.py", line 324, in runCommand#012 command = self.generate_command(command_header)#012 File "/usr/lib/ambari-agent/lib/ambari_agent/CustomServiceOrchestrator.py", line 504, in generate_command#012 command_dict = self.configuration_builder.get_configuration(cluster_id, service_name, component_name, required_config_timestamp)#012 File "/usr/lib/ambari-agent/lib/ambari_agent/ConfigurationBuilder.py", line 43, in get_configuration#012 'clusterHostInfo': self.topology_cache.get_cluster_host_info(cluster_id),#012 File "/usr/lib/ambari-agent/lib/ambari_agent/ClusterTopologyCache.py", line 108, in get_cluster_host_info#012 hostnames = [self.hosts_to_id[cluster_id]‌[host_id].hostName for host_id in component_dict.hostIds]#012KeyError: 7