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https://issues.apache.org/jira/browse/ASTERIXDB-3303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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murali krishna reopened ASTERIXDB-3303:
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The list of projected variables from the base table is not correctly computed.
> 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
> Priority: Major
> Labels: triaged
>
> 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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