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  1. Kylin
  2. KYLIN-1385

Enhance FactDistinctColumnsJob to use multiple reducers

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: v1.2, v1.4.0
    • Fix Version/s: v1.5.0
    • Component/s: Job Engine
    • Labels:
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      Description

      So far the FactDistinctColumnsJob is using 1 reducer to merge the distinct values for all dimension columns on fact table. When there are 1 or multiple ultra high cardinality columns, it couldn't gain concurrency; It should dispatch the workload to multiple reducers.

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            • Assignee:
              shaofengshi Shao Feng Shi
              Reporter:
              shaofengshi Shao Feng Shi
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                Updated:
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