murali krishna created ASTERIXDB-3303:
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Summary: Calculate projection size at scan level (CBO)
Key: ASTERIXDB-3303
URL: https://issues.apache.org/jira/browse/ASTERIXDB-3303
Project: Apache AsterixDB
Issue Type: Improvement
Components: COMP - Compiler
Reporter: murali krishna
It is useful for the CBO to know the how many fields are being projected out at
the scan level and their avg sizes. This will tell us how many bytes are
projected at the scan level. This information is used by the cost formulas.
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