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Posted to commits@beam.apache.org by "Vaclav Plajt (JIRA)" <ji...@apache.org> on 2018/08/06 08:17:00 UTC

[jira] [Created] (BEAM-5077) Use type informations about output, key and values from operators to set coders

Vaclav Plajt created BEAM-5077:
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             Summary: Use type informations about output, key and values from operators to set coders
                 Key: BEAM-5077
                 URL: https://issues.apache.org/jira/browse/BEAM-5077
             Project: Beam
          Issue Type: Sub-task
          Components: dsl-euphoria
            Reporter: Vaclav Plajt
            Assignee: David Moravek


Operators can (optionally) carry `TypeDescriptor` of its output, key and value types. These can be used to determine right coders for `PCollection`s during translation to Beam API.

Another enhancements of coders resolution are desired:
 * Allow API user to disable use of `KryoCoder` as fallback coder.
 * Every automatically created `KryoCoder` needs to respects classes registrations provided by user.
 * Automate creation of 'PairCoder' whenever needed.



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