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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2014/12/15 17:26:14 UTC

[jira] [Created] (FLINK-1328) Rework Constant Field Annotations

Fabian Hueske created FLINK-1328:
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             Summary: Rework Constant Field Annotations
                 Key: FLINK-1328
                 URL: https://issues.apache.org/jira/browse/FLINK-1328
             Project: Flink
          Issue Type: Improvement
          Components: Java API, Optimizer, Scala API
    Affects Versions: 0.7.0-incubating
            Reporter: Fabian Hueske
            Assignee: Fabian Hueske


Constant field annotations are used by the optimizer to determine whether physical data properties such as sorting or partitioning are retained by user defined functions.

The current implementation is limited and can be extended in several ways:
- Fields that are copied to other positions
- Field definitions for non-tuple data types (Pojos)

There is a pull request (#83) that goes into this direction and which can be extended.



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