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Posted to commits@samza.apache.org by "Slim Bouguerra (Jira)" <ji...@apache.org> on 2020/08/03 18:52:00 UTC

[jira] [Created] (SAMZA-2573) Ensure Samza SQL rel message column order

Slim Bouguerra created SAMZA-2573:
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             Summary: Ensure  Samza SQL rel message column order
                 Key: SAMZA-2573
                 URL: https://issues.apache.org/jira/browse/SAMZA-2573
             Project: Samza
          Issue Type: Sub-task
            Reporter: Slim Bouguerra


Ensure that the Calcite Schema top level column order is the same as the Samza input Rel Message.

This is an important item for the following reasons:
 * Calcite Query translation and planning relies on column index to access or generate expression hence it is a critical task to ensure that the order of physical column and schema is the same.
 * Once remote tables add the support of listing for primary key column, it becomes important to break the assumption that the __key__ column is always at index 0.



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