[AMBARI-17219] Removing and re-adding hosts makes database inconsitent

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.4.0
• Component/s: ambari-server
• Assignee: Daniel Gergely
• Reporter: Daniel Gergely
• Created: 14/Jun/16 12:57
• Updated: 15/Jun/16 16:30
• Resolved: 15/Jun/16 16:30

Description

When a host is removed, it is necessary to have all the components stopped and removed, before the host itself can be deleted.
If a host component is not stopped, it is not allowed to be removed, so the host itself cannot be removed. However if re-adding the host is tried, even if it is still in the cluster, a row is inserted to topology_host_info table. Multiple lines of the same host in that table is incorrect, so topology validation fails.

Expected behaviour: if host is still in the cluster, a duplicate should not be able to be persisted in any of the related tables.

Issue Links

• links to: Review Board