[GitHub] [carbondata] Indhumathi27 opened a new pull request #3174: [CARBONDATA-3344] Fix Drop column not present in table

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Indhumathi27 opened a new pull request #3174: [CARBONDATA-3344] Fix Drop column not present in table
URL: https://github.com/apache/carbondata/pull/3174
 
 
   Why this PR needed?
   When trying to drop column which is not present in main table, it is throwing Null pointer exception, instead of throwing exception for column does not exists in table.
   
    - [ ] Any interfaces changed?
   
    - [ ] Any backward compatibility impacted?
   
    - [ ] Document update required?
   
    - [x] Testing done
           testcase added
         
    - [ ] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.
   
   

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