[jira] [Created] (FLINK-11981) Introduce ProjectionCodeGenerator and HashCodeGenerator for BaseRow

[Shang Yuanchun (Jira)]

Jingsong Lee created FLINK-11981:
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             Summary: Introduce ProjectionCodeGenerator and HashCodeGenerator for BaseRow
                 Key: FLINK-11981
                 URL: https://issues.apache.org/jira/browse/FLINK-11981
             Project: Flink
          Issue Type: New Feature
          Components: SQL / Planner
            Reporter: Jingsong Lee
            Assignee: Jingsong Lee


Introduce efficient BaseRow operations:

1. Project Code Generator: Take out some fields of BaseRow to generate a new BaseRow.

2. HashCodeGenerator: Calculate a hash value based on some fields of BaseRow.



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