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  1. Kylin
  2. KYLIN-1557

Enhance the check on aggregation group dimension number

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: v1.5.0
    • Fix Version/s: v1.5.1
    • Component/s: Metadata
    • Labels:
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      Description

      If the dimension number in an aggregation group exceeds the number of "kylin.cube.aggrgroup.max.size" (default 12), Kylin will throw an error saying "Aggregation group <n> has too many dimensions"; User has to remove some dimensions to proceed.

      This check adds up the number of mandantory dimensions, hierarchy, joint and normal dimensions; This is too strong. The check should be optimized, all mandantory be treated as 1; all joint dimensions be treated as 2; each hierarchy be treated as N+1; nomal dimensions be 2^N; Control total combination numbers no more than a configured value ("kylin.cube.aggrgroup.max.combination", default 4096).

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            • Assignee:
              Shaofengshi Shaofeng SHI
              Reporter:
              Shaofengshi Shaofeng SHI
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                Updated:
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