[jira] [Updated] (BEAM-11742) Use schema when creating record batch in ParquetSink

["Kenneth Knowles (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-11742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kenneth Knowles updated BEAM-11742:
-----------------------------------
    Status: Open  (was: Triage Needed)

> Use schema when creating record batch in ParquetSink
> ----------------------------------------------------
>
>                 Key: BEAM-11742
>                 URL: https://issues.apache.org/jira/browse/BEAM-11742
>             Project: Beam
>          Issue Type: Improvement
>          Components: io-py-parquet
>            Reporter: Wenbing Bai
>            Assignee: Wenbing Bai
>            Priority: P2
>
> Before pyarrow 0.15, it is not possible to create pyarrow record batch with schema.
> So in apache_beam.io.parquetio._ParquetSink, when creating pyarrow record batch we use 
>  
> {code:java}
> rb = pa.RecordBatch.from_arrays(arrays, self._schema.names){code}
> Error is raised that the parquet table to be created (record batch schema) has a different schema with the schema specify (self._schema).
> For example, when schema specified with "is not null", the record batch schema doesn't indicate that, the error will be raised.
>  
> The fix is to use schema instead of names in pa.RecordBatch.from_arrays
> {code:java}
> rb = pa.RecordBatch.from_arrays(arrays, schema=self._schema){code}
>  



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