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https://issues.apache.org/jira/browse/HDFS-12350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ajay Kumar updated HDFS-12350:
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Description:
We should tag the hadoop/hdfs config so that we can retrieve properties by
there usage/application like PERFORMANCE, NAMENODE etc. Right now we don't have
an option available to group or list related properties together. 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 file with tags.
{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}
was:
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}
> 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, HDFS-12350.02.patch
>
>
> We should tag the hadoop/hdfs config so that we can retrieve properties by
> there usage/application like PERFORMANCE, NAMENODE etc. Right now we don't
> have an option available to group or list related properties together.
> 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 file with tags.
> {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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