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https://issues.apache.org/jira/browse/AMBARI-21168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16038870#comment-16038870
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Sandor Magyari commented on AMBARI-21168:
-----------------------------------------
Build failure not related to this patch.
> Deleting host from cluster leaves Ambari in inconsistent state
> (intermittently)
> -------------------------------------------------------------------------------
>
> Key: AMBARI-21168
> URL: https://issues.apache.org/jira/browse/AMBARI-21168
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Reporter: Sandor Magyari
> Assignee: Sandor Magyari
> Priority: Critical
> Fix For: 2.5.2
>
> Attachments: AMBARI-21168.patch
>
>
> When deleting several components and hosts from Ambari under some
> circumstances it could happen that a serviceComponentHost is deleted from
> cache but it's still present in the DB. Since there are no DB errors in logs,
> probably it gets reinserted by a concurrent merge. For ex. HeatbeatProcessor
> may update the state meanwhile deleting components, which could result in
> such situation.
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