[jira] [Resolved] (AMBARI-4708) Actual configs not updated after restart of host component

["Siddharth Wagle (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-4708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Wagle resolved AMBARI-4708.
-------------------------------------

    Resolution: Fixed

Committed to trunk.

> Actual configs not updated after restart of host component
> ----------------------------------------------------------
>
>                 Key: AMBARI-4708
>                 URL: https://issues.apache.org/jira/browse/AMBARI-4708
>             Project: Ambari
>          Issue Type: Bug
>          Components: agent, controller
>    Affects Versions: 1.5.0
>            Reporter: Dmytro Sen
>            Assignee: Dmytro Sen
>            Priority: Critical
>             Fix For: 1.5.0
>
>
> Updated HDFS configs aren't applied after RESTART.
> Steps:
> - On a 3 node cluster, create a ConfigGroup for datanode.
> - Override heap size to 1025m instead of 1024m
> - Restart DN.
> Result:
> - The /var/lib/ambari-agent/data/config.json, has the correct values for the config type:
> {code}
> "global": {"2": "version1392171779044", "tag": "version1"}
> {code}
> - The API call still shows global as default version:
> {code}
> http://hostname1:8080/api/v1/clusters/c1/hosts/hostname1/host_components/DATANODE
> {code} 
> Note:
> It works after agent is restarted.
> {code}
> {
> global: {
> overrides: {
> 2: "version1392171779044"
> },
> default: "version1"
> }
> {code}
> The cause is that hooks aren't executed for the custom_command like RESTART. Since configs for HDFS are generated in hook.py, we must execute hook.py before custom commands or move config generation from hook.py.



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