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https://issues.apache.org/jira/browse/AMBARI-24087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Magyar resolved AMBARI-24087.
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Resolution: Fixed
> The alert "DataNode Unmounted Data Dir" did not appear
> ------------------------------------------------------
>
> Key: AMBARI-24087
> URL: https://issues.apache.org/jira/browse/AMBARI-24087
> Project: Ambari
> Issue Type: Bug
> Components: ambari-agent
> Affects Versions: 2.7.0
> Reporter: Attila Magyar
> Assignee: Attila Magyar
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.7.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> str:
> 1) execute commands on hosts:
> dd if=/dev/zero of=/grid/0/fs bs=1 count=0 seek=10G
> mkfs.ext3 -F /grid/0/fs
> mkdir /grid/1/
> mount -o loop,rw /grid/0/fs /grid/1/
> chown cstm-hdfs:hadoop /grid/1/
> 2) set DN dir property (dfs.datanode.data.dir) to
> "/grid/0/hadoop/hdfs/data,/newdndir,/grid/1/hadoop/hdfs" and restart needed
> services
> 3) check that alert is not present "DataNode Unmounted Data Dir" (after 2 min)
> 4) Stop DN(s)
> 5) umount /grid/1/
> 6) Start DN(s)
> 7) check that alert is present
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