Riza Suminto created IMPALA-13319:
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             Summary: Avoid duplicate exec option declaration in py.test
                 Key: IMPALA-13319
                 URL: https://issues.apache.org/jira/browse/IMPALA-13319
             Project: IMPALA
          Issue Type: Improvement
          Components: Test
    Affects Versions: Impala 4.4.0
            Reporter: Riza Suminto
            Assignee: Riza Suminto


add_mandatory_exec_option() may replace existing option values in 'exec_option' 
dimension, and may cause unintended test vector duplication. For example, the 
following declaration will create two duplicate test vector, both with 
"disable_codegen=False":
{code:java}
    cls.ImpalaTestMatrix.add_dimension(create_exec_option_dimension(
      disable_codegen_options=[False, True]))
    add_mandatory_exec_option(cls, "disable_codegen", False){code}
 

add_exec_option_dimension() will create new test dimension for a 'key', but 
does not insert it into 'exec_option' dimension until vector generation later. 
It also does not validate if 'key' already exist in 'exec_option' dimension. 
This can confuse test writer when they need to write constraint, because they 
might look for the value at vector.get_value('exec_option')['key'] instead of 
vector.get_value('key'), and vice versa.



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