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  1. Tajo
  2. TAJO-1041 Tuple Block Iteration Model
  3. TAJO-1058

Implement off-heap hash table for hash aggregation

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      See the title.

      Currently, we use HashMap for hash aggregation. It causes GC overheads when the number of distinct hash keys is over tens of millions. We need to implement an alternative to the current implementation. This implementation should consider block iteration addressed in TAJO-1041.

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              • Assignee:
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                Reporter:
                hyunsik Hyunsik Choi
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                • Created:
                  Updated: