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ambari-server/src/main/resources/common-services/KAFKA/0.8.1/package/scripts/kafka.py
Lines 117 (patched)
<https://reviews.apache.org/r/60249/#comment254481>

    how are we co-relating the host and the all_racks array here?
    Are we expecting the hosts to be sorted and all_racks to match with 
all_racks index to pick the config.
    This might break if the user later adds another broker.



ambari-server/src/main/resources/common-services/KAFKA/0.8.1/package/scripts/kafka.py
Lines 121 (patched)
<https://reviews.apache.org/r/60249/#comment254478>

    This will add the broker.rack to all the versions. Can we make sure we only 
add this 0.10.x onwards


- Sriharsha Chintalapani


On July 4, 2017, 6:53 p.m., Ambud Sharma wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/60249/
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> 
> (Updated July 4, 2017, 6:53 p.m.)
> 
> 
> Review request for Ambari and Alejandro Fernandez.
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Ambari rack awareness for Kafka. 
> https://issues.apache.org/jira/browse/AMBARI-21234
> 
> As an operations person it would be nice to manage Kafka rack awareness via 
> Ambari. Ambari allows node rack information to be configured and this 
> information can then be pulled in the Kafka stack and populated in the 
> server.properties file for Kafka.
> Design:
> This stack change uses the /clusterHostInfo/all_hosts and 
> /clusterHostInfo/all_racks paths and materializes them to a variable. Then it 
> uses linear search to find this node in the list of all hosts and it's 
> corresponding rack id. This information is then stored in a variable called 
> rack and which is materialized during the configure method of the broker 
> scripts.
> This stack change relies on the node rack information stored in Ambari 
> therefore will enable both Ambari UI and Blueprints to be used for setting up 
> Kafka broker rack information.
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/resources/common-services/KAFKA/0.8.1/metainfo.xml 
> d322adc47b 
>   
> ambari-server/src/main/resources/common-services/KAFKA/0.8.1/package/scripts/kafka.py
>  1327090aa7 
>   
> ambari-server/src/main/resources/common-services/KAFKA/0.8.1/package/scripts/params.py
>  c36a10ff28 
> 
> 
> Diff: https://reviews.apache.org/r/60249/diff/5/
> 
> 
> Testing
> -------
> 
> Manually deployed Kafka cluster and verified the broker.rack property is 
> correctly populated.
> 
> 
> Thanks,
> 
> Ambud Sharma
> 
>

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