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https://issues.apache.org/jira/browse/AMBARI-6014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017066#comment-14017066
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Jonathan Hurley commented on AMBARI-6014:
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Caused by NAGIOS_* macros not being enabled and an error in the wrapper shell
script that alters return codes while in maintenance mode.
> HDFS alert hangs for a long time after enabling Maintenance mode
> ----------------------------------------------------------------
>
> Key: AMBARI-6014
> URL: https://issues.apache.org/jira/browse/AMBARI-6014
> Project: Ambari
> Issue Type: Bug
> Affects Versions: 1.6.0
> Environment: ambari-server --version: 1.6.0
> ambari-server --hash: 7cc67c712b8eb9e6fe5e7d0659688a92725d6522
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 1.6.1
>
>
> *STR:*
> # Stop HDFS with started Nagios service.
> # Turn on Maintenance mode for HDFS.
> *Result:* All alerts dissapear, except '_HDFS capacity utilization_' - it
> hangs for a long time (in my case it was smthng about 10-11 minutes)
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