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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13628) Support to retrieve specific property from configuration via REST API
Date Tue, 20 Sep 2016 16:37:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Weiwei Yang updated HADOOP-13628:
---------------------------------
    Description: 
Currently we can use rest API to retrieve all configuration properties per daemon, but unable
to get a specific property by name. This causes extra parse work at client side when dealing
with Hadoop configurations, and also it's quite over head to send all configuration in a http
response over network. Propose to support following a {{name}} parameter in the http request,
by issuing

{code}
curl --header "Accept:application/json" http://${RM_HOST}/conf?name=yarn.nodemanager.aux-services
{code}

get output
{code}
{"property"{"key":"yarn.resourcemanager.hostname","value":"${RM_HOST}","isFinal":false,"resource":"yarn-site.xml"}}
{code}

This change is fully backwards compatible.

  was:
Currently we can use rest API to retrieve all configuration properties per daemon, but unable
to get a specific property by name. This causes extra parse work at client side when dealing
with Hadoop configurations, and also it's quite over head to send all configuration in a http
response over network. Propose to support following a {{name}} parameter in the http request,

{code}
curl --header "Accept:application/json" http://${RM_HOST}/conf?name=yarn.nodemanager.aux-services

{"property"{"key":"yarn.resourcemanager.hostname","value":"${RM_HOST}","isFinal":false,"resource":"yarn-site.xml"}}
{code}

This change is fully backwards compatible.


> Support to retrieve specific property from configuration via REST API
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-13628
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13628
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 2.7.3
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>
> Currently we can use rest API to retrieve all configuration properties per daemon, but
unable to get a specific property by name. This causes extra parse work at client side when
dealing with Hadoop configurations, and also it's quite over head to send all configuration
in a http response over network. Propose to support following a {{name}} parameter in the
http request, by issuing
> {code}
> curl --header "Accept:application/json" http://${RM_HOST}/conf?name=yarn.nodemanager.aux-services
> {code}
> get output
> {code}
> {"property"{"key":"yarn.resourcemanager.hostname","value":"${RM_HOST}","isFinal":false,"resource":"yarn-site.xml"}}
> {code}
> This change is fully backwards compatible.



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