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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12350) Support meta tags in configs
Date Wed, 30 Aug 2017 05:53:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ajay Kumar updated HDFS-12350:
------------------------------
    Attachment: HDFS-12350.01.patch

> Support meta tags in configs
> ----------------------------
>
>                 Key: HDFS-12350
>                 URL: https://issues.apache.org/jira/browse/HDFS-12350
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ajay Kumar
>            Assignee: Ajay Kumar
>         Attachments: HDFS-12350.01.patch
>
>
> We should add meta tag extension to the hadoop/hdfs config so that we can retrieve properties
by various tags like PERFORMANCE, NAMENODE etc. Right now we don't have an option available
to group or list properties related to performance or security or datanodes. Grouping properties
through some restricted set of Meta tags and then exposing them in Configuration class will
be useful for end users.
> For example, here is an config with meta tag.
> {code}
> <configuration>
>    <property>
>       <name>dfs.namenode.servicerpc-bind-host</name>
>       <value>localhost</value>
>       <tag> REQUIRED </tag>
>    </property>
>    
>   <property>
>       <name>dfs.namenode.fs-limits.min-block-size</name>
>       <value> 1048576 </value>
>       <tag> PERFORMANCE,REQUIRED</tag>
>    </property>
>  <property>
>       <name>dfs.namenode.logging.level</name>
>       <value>Info</value>
>       <tag>HDFS, DEBUG </tag>
>    </property>
>       
> <configuration>
> {code}



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