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Posted to issues@beam.apache.org by "Ruixue Liao (Jira)" <ji...@apache.org> on 2020/04/24 00:51:00 UTC
[jira] [Created] (BEAM-9814) Error occurred when transforming from
row to a new row without setCoder
Ruixue Liao created BEAM-9814:
---------------------------------
Summary: Error occurred when transforming from row to a new row without setCoder
Key: BEAM-9814
URL: https://issues.apache.org/jira/browse/BEAM-9814
Project: Beam
Issue Type: Bug
Components: beam-model
Affects Versions: 2.19.0
Reporter: Ruixue Liao
The output row from transform function uses the input row schema to verify which causes error. Ex:
{{ .apply(MapElements.via(
new SimpleFunction<Row, Row>() \{
@Override
public Row apply(Row line) {
return Row.withSchema(newSchema).addValues("a", 1, "b").build();
}
}));}}
{{Got error when the output row schema is not the same as the input row.}}
Need to add {{.setCoder(RowCoder.of(newSchema))}} after the transform function to make it work. {{}}
{{Related link: [https://stackoverflow.com/questions/61236972/beam-sql-udf-to-split-one-column-into-multiple-columns]}}
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