[jira] [Created] (KYLIN-5748) Skip build flat table for index build job if all new created indexes can be built from existed parent index

[Zhenning Zhang (Jira)]

Zhenning Zhang created KYLIN-5748:
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             Summary: Skip build flat table for index build job if all new 
created indexes can be built from existed parent index
                 Key: KYLIN-5748
                 URL: https://issues.apache.org/jira/browse/KYLIN-5748
             Project: Kylin
          Issue Type: Improvement
    Affects Versions: 5.0-beta
            Reporter: Zhenning Zhang
            Assignee: Zhenning Zhang


For an index build job, if all the new added indexes can be built from their 
existed parent index. No index was built from new created flat table.

For this case, there won't be any data inconsistency across indexes. And there 
is no need to build a new flat table to serve the stage of index build by layer.

So I think we can skip stage BUILD DICT and stage GENERATE FLAT TABLE for an 
index build job in condition that all new added indexes can be built from their 
existed parent index



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