Timo Walther created FLINK-19976:
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Summary: FLIP-136: Improve interoperability between DataStream and
Table API
Key: FLINK-19976
URL: https://issues.apache.org/jira/browse/FLINK-19976
Project: Flink
Issue Type: New Feature
Components: Table SQL / API
Reporter: Timo Walther
The Table API has received many new features over the last year. It supports a
new type system (FLIP-37), connectors support changelogs (FLIP-95), we have
well defined internal data structures (FLIP-95), support for result retrieval
in an interactive fashion (FLIP-84), and soon new TableDescriptors (FLIP-129).
However, the interfaces from and to DataStream API have not been touched during
the introduction of these new features and are kind of outdated. The interfaces
lack important functionality that is available in Table API but not exposed to
DataStream API users. DataStream API is still our most important API which is
why a good interoperability is crucial.
This FLIP is a mixture of different topics that improve the interoperability
between DataStream and Table API in terms of:
- DataStream ↔ Table conversion
- translation of type systems TypeInformation ↔ DataType
- schema definition (incl. rowtime, watermarks, primary key)
- changelog handling
- row handling in DataStream API
See:
https://cwiki.apache.org/confluence/pages/resumedraft.action?draftId=158872537&draftShareId=69731f11-580f-4bfe-847f-e5eb3e585f1f&;
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