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Posted to dev@ambari.apache.org by "Siddharth Wagle (JIRA)" <ji...@apache.org> on 2013/08/06 19:14:48 UTC
[jira] [Updated] (AMBARI-2819) Extending Stack definition to remove
duplication in stack metadata info.
[ https://issues.apache.org/jira/browse/AMBARI-2819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Siddharth Wagle updated AMBARI-2819:
------------------------------------
Description:
The idea is to allow extending a stack definition and overriding some of its values.
Current stack definition structure of files and directories:
{noformat}
|_ stacks
|_ <dist_name>
|_ <version_number>
metainfo.xml
|_ repos
repoinfo.xml
|_ services
|_ <service_name>
metainfo.xml
|_ configuration
configuration files
{noformat}
We introduce extends element at the top level (stack version level) that links to the parent stack definition for this stack version.
*Rules of extension*:
All of the parent stack services are automatically a part of the child stack
unless explicitly excluded.
2. Only one parent stack can be extended by the child stack.
3. <stacks>.<dist_name>.<repos>.repoinfo.xml, will not be overridden
4. <stacks>.<dist_name>.<services>.<service_name>.metainfo.xml, will not be overridden
#1. Extending stack definition
File: <stacks>.<dist_name>.<version_number>.metainfo.xml
E.g.: /stacks/HDP/1.3.1/metainfo.xml
<metainfo>
<versions>
<upgrade>1.2.0</upgrade>
</versions>
<active>true</active>
<extends>1.3.0</extends>
</metainfo>
2. Extending service definition
<stacks>.<dist_name>.<version_number>.<service_name>.metainfo.xml
E.g.: /stacks/HDP/1.2.1/services/HDFS/metainfo.xml
<metainfo>
<user>root</user>
<comment>Apache Hadoop Distributed File System</comment>
<version>1.1.2</version>
<!-- 0: remove property from configuration for this version
1: (default) new or overwrites, if present in prior versions -->
<override-visibility>0/1</override-visibility >
</metainfo>
3. Extending service configurations
File: <stacks>.<dist_name>.<version_number>.<service_name>.<configuration>.configuration_file
E.g.: /stacks/HDP/1.3.1/services/HDFS/configuration/hdfs-site.xml
<configuration>
<property>
<name>dfs.name.dir</name>
<deleted>true</deleted>
</property>
</configuration>
*Notes*:
The same property can disappear and reappear in an extension graph.
1.3.0 ----------------> 1.3.1 ----------------> 1.3.2 ----------------> 1.3.5
a = b a = c a = c a = c
was:
The idea is to allow extending a stack definition and overriding some of its values.
Current stack definition structure of files and directories:
{noformat}
|_ stacks
|_ <dist_name>
|_ <version_number>
metainfo.xml
|_ repos
repoinfo.xml
|_ services
|_ <service_name>
metainfo.xml
|_ configuration
configuration files
{noformat}
We introduce extends element at the top level (stack version level) that links to the parent stack definition for this stack version.
*Rules of extension*:
All of the parent stack services are automatically a part of the child stack
unless explicitly excluded.
2. Only one parent stack can be extended by the child stack.
3. <stacks>.<dist_name>.<repos>.repoinfo.xml, will not be overridden
4. <stacks>.<dist_name>.<services>.<service_name>.metainfo.xml, will not be overridden
1. Extending stack definition
File: <stacks>.<dist_name>.<version_number>.metainfo.xml
E.g.: /stacks/HDP/1.3.1/metainfo.xml
<metainfo>
<versions>
<upgrade>1.2.0</upgrade>
</versions>
<active>true</active>
<extends>1.3.0</extends>
</metainfo>
2. Extending service definition
<stacks>.<dist_name>.<version_number>.<service_name>.metainfo.xml
E.g.: /stacks/HDP/1.2.1/services/HDFS/metainfo.xml
<metainfo>
<user>root</user>
<comment>Apache Hadoop Distributed File System</comment>
<version>1.1.2</version>
<!-- 0: remove property from configuration for this version
1: (default) new or overwrites, if present in prior versions -->
<override-visibility>0/1</override-visibility >
</metainfo>
3. Extending service configurations
File: <stacks>.<dist_name>.<version_number>.<service_name>.<configuration>.configuration_file
E.g.: /stacks/HDP/1.3.1/services/HDFS/configuration/hdfs-site.xml
<configuration>
<property>
<name>dfs.name.dir</name>
<deleted>true</deleted>
</property>
</configuration>
*Notes*:
The same property can disappear and reappear in an extension graph.
1.3.0 ----------------> 1.3.1 ----------------> 1.3.2 ----------------> 1.3.5
a = b a = c a = c a = c
> Extending Stack definition to remove duplication in stack metadata info.
> ------------------------------------------------------------------------
>
> Key: AMBARI-2819
> URL: https://issues.apache.org/jira/browse/AMBARI-2819
> Project: Ambari
> Issue Type: Improvement
> Components: controller
> Reporter: Siddharth Wagle
> Assignee: Siddharth Wagle
>
> The idea is to allow extending a stack definition and overriding some of its values.
> Current stack definition structure of files and directories:
> {noformat}
> |_ stacks
> |_ <dist_name>
> |_ <version_number>
> metainfo.xml
> |_ repos
> repoinfo.xml
> |_ services
> |_ <service_name>
> metainfo.xml
> |_ configuration
> configuration files
> {noformat}
> We introduce extends element at the top level (stack version level) that links to the parent stack definition for this stack version.
> *Rules of extension*:
> All of the parent stack services are automatically a part of the child stack
> unless explicitly excluded.
> 2. Only one parent stack can be extended by the child stack.
> 3. <stacks>.<dist_name>.<repos>.repoinfo.xml, will not be overridden
> 4. <stacks>.<dist_name>.<services>.<service_name>.metainfo.xml, will not be overridden
> #1. Extending stack definition
> File: <stacks>.<dist_name>.<version_number>.metainfo.xml
> E.g.: /stacks/HDP/1.3.1/metainfo.xml
>
> <metainfo>
> <versions>
> <upgrade>1.2.0</upgrade>
> </versions>
> <active>true</active>
> <extends>1.3.0</extends>
> </metainfo>
> 2. Extending service definition
> <stacks>.<dist_name>.<version_number>.<service_name>.metainfo.xml
> E.g.: /stacks/HDP/1.2.1/services/HDFS/metainfo.xml
> <metainfo>
> <user>root</user>
> <comment>Apache Hadoop Distributed File System</comment>
> <version>1.1.2</version>
> <!-- 0: remove property from configuration for this version
> 1: (default) new or overwrites, if present in prior versions -->
> <override-visibility>0/1</override-visibility >
> </metainfo>
> 3. Extending service configurations
> File: <stacks>.<dist_name>.<version_number>.<service_name>.<configuration>.configuration_file
> E.g.: /stacks/HDP/1.3.1/services/HDFS/configuration/hdfs-site.xml
> <configuration>
> <property>
> <name>dfs.name.dir</name>
> <deleted>true</deleted>
> </property>
> </configuration>
> *Notes*:
> The same property can disappear and reappear in an extension graph.
> 1.3.0 ----------------> 1.3.1 ----------------> 1.3.2 ----------------> 1.3.5
> a = b a = c a = c a = c
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