Shaofeng SHI created KYLIN-1557:
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Summary: Enhance the check on aggregation group dimension number
Key: KYLIN-1557
URL: https://issues.apache.org/jira/browse/KYLIN-1557
Project: Kylin
Issue Type: Improvement
Components: Metadata
Affects Versions: v1.5.0
Reporter: Shaofeng SHI
Assignee: Shaofeng SHI
Fix For: v1.5.1
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 + joint dimensions should be treated as 1; hierarchy dimensions
should be treated as N; nomal dimensions be 2^N; Control total combination
numbers at a certain level.
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