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  1. Hive
  2. HIVE-15988

LLAP: cache ORC ACID delete deltas

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: llap, Transactions
    • Labels:
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      Description

      HIVE-12631 implemented ORC ACID table support in LLAP. If we cache ACID delete delta in LLAP, it will be faster.

      The cache is currently low-level (CB-level in ORC), so we could just use it to read bases and deltas (deltas should be cached with higher priority) and merge as usual. We could also cache merged representation in future.

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        1. HIVE-15988.1.patch
          105 kB
          Teddy Choi

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              • Assignee:
                teddy.choi Teddy Choi
                Reporter:
                teddy.choi Teddy Choi
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                Dates

                • Created:
                  Updated: