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Date: Tue, 18 Feb 2014 12:17:19 +0000 (UTC)
From: "Dmytro Sen (JIRA)" <jira@apache.org>
To: dev@ambari.apache.org
Message-ID: <JIRA.12695689.1392725831338.56929.1392725839762@arcas>
In-Reply-To: <JIRA.12695689.1392725831338@arcas>
References: <JIRA.12695689.1392725831338@arcas>
Subject: [jira] [Created] (AMBARI-4708) Actual configs not updated after
 restart of host component
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Dmytro Sen created AMBARI-4708:
----------------------------------

             Summary: 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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