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https://issues.apache.org/jira/browse/AMBARI-7738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14181840#comment-14181840
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Hudson commented on AMBARI-7738:
--------------------------------

FAILURE: Integrated in Ambari-branch-1.7.0 #193 (See 
[https://builds.apache.org/job/Ambari-branch-1.7.0/193/])
AMBARI-7738.  Fix blueprint processor to properly handle config topology update 
for components with a valid cardinality of 0 (jspeidel: 
http://git-wip-us.apache.org/repos/asf?p=ambari.git&a=commit&h=a736a0cfa5c6add7c2223560ac8bd14d42003c88)
* 
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/ClusterResourceProvider.java
* 
ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessorTest.java
* 
ambari-server/src/test/java/org/apache/ambari/server/controller/internal/BaseBlueprintProcessorTest.java
* 
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/Stack.java
* 
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BaseBlueprintProcessor.java
* 
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/Cardinality.java
* 
ambari-server/src/test/java/org/apache/ambari/server/controller/internal/ClusterResourceProviderTest.java
* 
ambari-server/src/main/java/org/apache/ambari/server/controller/internal/BlueprintConfigurationProcessor.java


> Blueprints: Cluster deployment attempt in HDP 2.1 fails without Yarn 
> APP_TIMELINE_SERVER
> ----------------------------------------------------------------------------------------
>
>                 Key: AMBARI-7738
>                 URL: https://issues.apache.org/jira/browse/AMBARI-7738
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 1.7.0
>            Reporter: Robert Nettleton
>            Assignee: Robert Nettleton
>             Fix For: 1.7.0
>
>         Attachments: AMBARI-7738.patch.2, AMBARI-7738_1.7.0.patch.2, 
> blueprint.json, cluster.json
>
>
> When a user attempts to create an HDP 2.1 cluster based on a Blueprint that 
> does not contain the following service:
> APP_TIMELINE_SERVER
> The cluster deployment will fail during the configuration step, and the 
> following error will be sent back to the REST client:
> "{
>   "status" : 400,
>   "message" : "Unable to update configuration property with topology 
> information. Component 'APP_TIMELINE_SERVER' is not mapped to any host group 
> or is mapped to multiple groups."
> }"
> The Blueprint configuration processor currently includes a statically-defined 
> list of properties that are candidates for topology updates. This basically 
> means that the correct host information is added to these configuration 
> properties when the cluster deployment is being prepared.  
> Some recent changes to the Ambari trunk have included some Yarn configuration 
> properties that are related to the Yarn Application Timeline Service (or ATS 
> for short).  
> The HDP 2.1 stack defines the cardinality of the APP_TIMELINE_SERVER to be 
> "0-1", which means that zero or 1 instances of this service can be present in 
> the cluster when Yarn is used.  This cardinality was selected because the 
> APP_TIMELINE_SERVER was considered a technical preview in HDP 2.1, and so was 
> not required by the HDP 2.1 stack.  This is why a Blueprint can be processed 
> without the ATS, even if blueprint validation is left on.  
> The BlueprintConfigurationProcessor class includes the following static 
> references to the APP_TIMELINE_SERVER process:
> "// APP_TIMELINE_SERVER
>     yarnSiteMap.put("yarn.timeline-service.address", new 
> SingleHostTopologyUpdater("APP_TIMELINE_SERVER"));
>     yarnSiteMap.put("yarn.timeline-service.webapp.address", new 
> SingleHostTopologyUpdater("APP_TIMELINE_SERVER"));
>     yarnSiteMap.put("yarn.timeline-service.webapp.https.address", new 
> SingleHostTopologyUpdater("APP_TIMELINE_SERVER"));"
> The BlueprintConfigurationProcessor needs to be modified such that the 
> topology substitution phase for these properties is not attempted when the 
> APP_TIMELINE_SERVER is not included in an HDP 2.1 Blueprint.  
> This problem will likely be constrained to the HDP 2.1 stack, since the ATS 
> will likely have a cardinality of "1" in future stack definitions after HDP 
> 2.1.  



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