Aditya Shah created HIVE-22764:
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             Summary: Create new command for "optimize" compaction and have 
basic implementation.
                 Key: HIVE-22764
                 URL: https://issues.apache.org/jira/browse/HIVE-22764
             Project: Hive
          Issue Type: Sub-task
            Reporter: Aditya Shah
            Assignee: Aditya Shah


Created new blocking compaction (added compaction type "optimize") by adding a 
lock request on the compaction's transaction. It works mostly like 
mmMajorCompaction and writes files w/o row_IDs. I have added an additional 
table property to provide optimize columns that is used by the compactor to 
cluster the data by. 



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