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https://issues.apache.org/jira/browse/AMBARI-25950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mohammad Arshad resolved AMBARI-25950.
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Resolution: Fixed
> Exclude hosts getting erased when RM, NN are restarted
> ------------------------------------------------------
>
> Key: AMBARI-25950
> URL: https://issues.apache.org/jira/browse/AMBARI-25950
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Reporter: D M Murali Krishna Reddy
> Assignee: D M Murali Krishna Reddy
> Priority: Major
> Fix For: 2.7.8
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> After decommissioning a Node Manager or a Data node, if Resource Manager or
> Namenode are restarted, the exclude hosts file is getting overwritten with
> empty contents, causing the NM, DN to get recommisioned.
>
> During NN, RM restart all_decommissioned_hosts is not set due to which in
> params_linux.py the exclude hosts file is getting created with empty content.
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