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Posted to commits@beam.apache.org by "Ben Sidhom (JIRA)" <ji...@apache.org> on 2018/03/19 23:29:00 UTC

[jira] [Created] (BEAM-3887) Python SDK harness retrieves element codes from gRPC read/write nodes

Ben Sidhom created BEAM-3887:
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             Summary: Python SDK harness retrieves element codes from gRPC read/write nodes
                 Key: BEAM-3887
                 URL: https://issues.apache.org/jira/browse/BEAM-3887
             Project: Beam
          Issue Type: Sub-task
          Components: sdk-py-core
            Reporter: Ben Sidhom
            Assignee: Ahmet Altay


The python harness does not correctly get coders from the gRPC read/write transforms but rather from PCollection inputs/outputs. This prevents the harness from correctly receiving/transmitting prefix-encoded elements (seen as prefix-encoded byte arrays by the runner).

It should instead retrieve input and output coders from the gRPC nodes.



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