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https://issues.apache.org/jira/browse/ASTERIXDB-3025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wail Y. Alkowaileet resolved ASTERIXDB-3025.
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Resolution: Implemented
> Introduce TupleProjector to allow Value Access Pushdowns
> --------------------------------------------------------
>
> Key: ASTERIXDB-3025
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-3025
> Project: Apache AsterixDB
> Issue Type: New Feature
> Components: HYR - Hyracks
> Affects Versions: 0.9.8
> Reporter: Wail Y. Alkowaileet
> Assignee: Wail Y. Alkowaileet
> Priority: Major
> Fix For: 0.9.8
>
>
> To prepare for the column format, we need to support value access pushdown
> for internal datasets (similar to Parquet).
> The TupleProjector allows AsterixDB to ask the primary index which values are
> needed. For the columnar format, it allows Hyracks to only read values that
> have been requested by a query.
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