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Posted to common-issues@hadoop.apache.org by "Weiwei Yang (JIRA)" <ji...@apache.org> on 2016/09/20 16:47:21 UTC
[jira] [Commented] (HADOOP-13628) Support to retrieve specific
property from configuration via REST API
[ https://issues.apache.org/jira/browse/HADOOP-13628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15507091#comment-15507091 ]
Weiwei Yang commented on HADOOP-13628:
--------------------------------------
Upload v1 patch, it only contains the support for JSON format response, I am open for comments if it looks OK or not. Then I can move forward to finish the XML part. Thanks a lot.
> 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
> Attachments: HADOOP-13628.01.patch
>
>
> 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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