Sridhar Sailappan created AMBARI-21282:
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             Summary: Support for macro based property definitions in Pig View
                 Key: AMBARI-21282
                 URL: https://issues.apache.org/jira/browse/AMBARI-21282
             Project: Ambari
          Issue Type: Improvement
          Components: ambari-views
    Affects Versions: 2.4.0
            Reporter: Sridhar Sailappan


The attached patch for Pig View provides support for property configurations 
with macro based definitions (relying on variable expansion of Hadoop 
Configuration).
 
e.g., Consider the following definition of properties for HDFS.
1) In Advanced core-site, property "fs.defaultFS" is defined to have value 
"${fs.defaultFS.dev}"
2) In Custom core-site, property "fs.defaultFS.dev" is defined to have value 
"hdfs://dev-sandbox.hortonworks.com:8020"
 
Now, when referencing the property "fs.defaultFS", the value should be resolved 
to "hdfs://dev-sandbox.hortonworks.com:8020".
 
This is typical variable expansion that is expected in Hadoop Configuration. 
Refer: 
https://hadoop.apache.org/docs/r2.6.0/api/org/apache/hadoop/conf/Configuration.html
This functionality of variable expansion is not available with Pig View. The 
attached patch (on branch-2.4.0) addresses this need.
 



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