Konstantin Orlov created IGNITE-21721:
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Summary: Sql. Adjust cost estimation for index scan
Key: IGNITE-21721
URL: https://issues.apache.org/jira/browse/IGNITE-21721
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Konstantin Orlov
Scan over an index if significantly slower than scan over a table. In some
cases (for example, TPC-H q4 on scaleFactor=0.1) it's faster to read an entire
table and do sorting in memory rather than scan the index.
Let's adjust cost function to reflect the real complexity of index scan.
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