rbalamohan opened a new pull request, #4005:
URL: https://github.com/apache/hive/pull/4005

   Post https://issues.apache.org/jira/browse/HIVE-24645, query compilation 
time increased for lot of queries. This is due to the fact that 
"MapredContext.createDummy" gets called from 
ExprNodeGenericFuncEvaluator.initialize() early in the compilation cycle. The 
fix for HIVE-24645 was supposed to be mainly for fetch.task.conversion, but got 
impacted for other cases.
   
   Intent of this ticket is to go through that fix only on need basis. i.e for 
the cases where UDF configure needs to be called. For queries that do not have 
UDF, it will not go through this path and will reduce compilation times.
   
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   


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