[jira] [Commented] (AMBARI-4490) If Ganglia is not installed, server logs hundreds of error messages

["Nate Cole (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AMBARI-4490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13891212#comment-13891212 ] 

Nate Cole commented on AMBARI-4490:
-----------------------------------

[~dshkvyra], I just consulted with Yusaku about this issue.  Here is the workflow:

The UI will set a properties like so:
"ambari.dfs.datanode.port": 50075
"dfs.datanode.address" : "0.0.0.0:${ambari.dfs.datanode.port}"

These get passed down, as-is, to the host with no substitution.  Also, they need to be read as-is with no substitution by the backend.

The ONLY time they need to be resolved and substituted is when we need those values in order to build the URL to call JMX (or, for any other URL call internal to Ambari).  You should not need a new Resource provider to do this.

> If Ganglia is not installed, server logs hundreds of error messages
> -------------------------------------------------------------------
>
>                 Key: AMBARI-4490
>                 URL: https://issues.apache.org/jira/browse/AMBARI-4490
>             Project: Ambari
>          Issue Type: Bug
>          Components: controller
>    Affects Versions: 1.5.0
>            Reporter: Dmytro Shkvyra
>            Assignee: Dmytro Shkvyra
>             Fix For: 1.5.0
>
>
> Log entries:
> {code}
> 01:08:54,508 ERROR [pool-1-thread-2] JMXPropertyProvider:487 - Caught exception getting JMX metrics : For input string: "${ambari.dfs.datanode.http.port}"
> 01:08:54,514 ERROR [pool-1-thread-1] JMXPropertyProvider:487 - Caught exception getting JMX metrics : For input string: "${ambari.dfs.datanode.http.port}"
> 01:09:02,505  INFO [qtp369362185-21] GangliaPropertyProvider:450 - Ganglia host is not live
> {code}



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