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<property require-input="false">
<name>dfs.namenode.checkpoint.dir</name>
<value>/hadoop/hdfs/namesecondary</value>
<description>Determines where on the local filesystem the DFS secondary
  name node should store the temporary images to merge.
  If this is a comma-delimited list of directories then the image is
  replicated in all of the directories for redundancy.
</description>
<display-name>SecondaryNameNode Checkpoint directories</display-name>
<filename>hdfs-site.xml</filename>
<deleted>false</deleted>
<on-ambari-upgrade add="false" delete="false" update="false"/>
<on-stack-upgrade merge="true"/>
<property-type></property-type>
<value-attributes>
  <type>directories</type>
  <overridable>false</overridable>
  <keystore>false</keystore>
</value-attributes>
<depends-on/>
<property_depended_by/>
<used-by/>
</property>

The corresponding Java class that maps these property definitions is https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/java/org/apache/ambari/server/state/PropertyInfo.java. The following table discusses the supported basic and advanced attributes.

Property Key	Explanation	Mandatory (M) or Optional (O)	Sample / Expected values
require-input
name
value
description
display-name
filename
deleted
on-ambari-upgrade
on-stack-upgrade
property-type
value-attributes
depends-on
used-by

The set of supported value-attributes in Ambari are explained below.

Value Attribute	Explanation	Sample / Allowed value
type
overridable
keystore

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