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From "Dmytro Sen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-12548) Ambari Agent does not register / heartbeat if "df" command hangs
Date Mon, 27 Jul 2015 09:32:04 GMT
Dmytro Sen created AMBARI-12548:
-----------------------------------

             Summary: 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


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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