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  1. Tajo (Retired)
  2. TAJO-316

Improve GreedyHeuristicJoinOrderAlgorithm to deal with non-commutative joins

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 0.8.0
    • Planner/Optimizer

    Description

      GreedyHeuristicJoinOrderAlgorithm is a default cost-based join order algorithm. It is designed only for inner joins, and it cannot deal with non-commutative joins, such as left/right/full outer join and semi/anti join. The main goal of this issue is to improve this algorithm to deal with them.

      Attachments

        1. TAJO-316.patch
          92 kB
          Hyunsik Choi
        2. TAJO-316_2.patch
          93 kB
          Hyunsik Choi

        Issue Links

          blocks

          Sub-task - The sub-task of the issue TAJO-312 Implement distributed execution part of outer join

          • Major - Major loss of function.
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. TAJO-340 Some joins with inline view causes 'Not all join conditions are pushed down to joins'

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Activity

            People

              hyunsik Hyunsik Choi
              hyunsik Hyunsik Choi
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              Dates

                Created:
                Updated:
                Resolved: