Ali Alsuliman created ASTERIXDB-2286:

             Summary: Parallel Sort Optimization
                 Key: ASTERIXDB-2286
             Project: Apache AsterixDB
          Issue Type: Improvement
          Components: COMP - Compiler, FUN - Functions, HYR - Hyracks
            Reporter: Ali Alsuliman

The current plan for queries with ORDER BY clauses consists of two phases; 
sorting the data locally in each partition and then sort-merging the data in 
one single partition. Even though the local sort happens in parallel, this 
effort is wasted by the fact that the merge is happening at one partition. It 
is desired to remove the merge step and do a true parallel sort where data is 
range-partitioned across the cluster.

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