Paul Rogers created IMPALA-8258:
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Summary: Enhance functional tables with realistic star-schema
simulation
Key: IMPALA-8258
URL: https://issues.apache.org/jira/browse/IMPALA-8258
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Affects Versions: Impala 3.1.0
Reporter: Paul Rogers
Assignee: Paul Rogers
The tables in the `functional` db provide many interesting cases. The tables in
TPC-H and TPC-DS simulate a well-behaved application.
We also need some tables that show messy, real-world cases:
* Correlated filters (same filter on multiple tables)
* Correlated keys (same join key across multiple tables)
* Extreme data skew
A simple four-table start-schema structure can give us what we want.
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