[jira] [Updated] (AMBARI-17219) Removing and re-adding hosts makes database inconsitent

["Daniel Gergely (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-17219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Gergely updated AMBARI-17219:
------------------------------------
    Attachment: AMBARI-17219_trunk_branch-2.4.patch
                AMBARI-17219_2.2-next.patch

> Removing and re-adding hosts makes database inconsitent
> -------------------------------------------------------
>
>                 Key: AMBARI-17219
>                 URL: https://issues.apache.org/jira/browse/AMBARI-17219
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>            Reporter: Daniel Gergely
>            Assignee: Daniel Gergely
>            Priority: Critical
>             Fix For: 2.4.0, 2.2-next, 2.5.0
>
>         Attachments: AMBARI-17219_2.2-next.patch, AMBARI-17219_trunk_branch-2.4.patch
>
>
> 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.



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