Csaba Ringhofer created IMPALA-10961:
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Summary: Implement 3-way quicksort in sorter
Key: IMPALA-10961
URL: https://issues.apache.org/jira/browse/IMPALA-10961
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Csaba Ringhofer
Using 3-way partitioning in quicksort could massively speed up sorting if there
is a large number of duplicate elements. This is very common in sorts before
partitioned inserts.
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