HIVE-2206: add a new optimizer for query correlation discovery and optimization
Review Request #7126 - Created Sept. 15, 2012 and updated
This optimizer exploits intra-query correlations and merges multiple correlated MapReduce jobs into one jobs. Open a new request since I have been working on hive-git.
All tests pass.
|Combining these two queries with a UNION ALL would make it easier to visually verify the results.||Carl Steinbach||Sept. 24, 2012, 9:52 p.m.||Open|