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From "Dmytro Sen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-12548) Ambari Agent does not register / heartbeat if "df" command hangs
Date Mon, 27 Jul 2015 09:34:04 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-12548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmytro Sen updated AMBARI-12548:
--------------------------------
    Attachment: AMBARI-12548.patch

> Ambari Agent does not register / heartbeat if "df" command hangs
> ----------------------------------------------------------------
>
>                 Key: AMBARI-12548
>                 URL: https://issues.apache.org/jira/browse/AMBARI-12548
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-agent
>    Affects Versions: 2.1.0
>            Reporter: Dmytro Sen
>            Assignee: Dmytro Sen
>            Priority: Critical
>             Fix For: 2.1.1
>
>         Attachments: AMBARI-12548.patch
>
>
> The agent executes the "df" command when it starts up.
> In rare scenarios, this command can hang (can even hanging for several days without any
timeout). When this happens the agent won't move forward to the process of registration, etc.
> There's an ambari-server property called agent.check.mounts.timeout. This can be defined
to force a timeout.
> However, we should always have a default timeout on the agent script side, even if this
property is not defined to avoid a situation where the agent is completely hung.



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