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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2020/12/24 23:34:34 UTC
[GitHub] [beam] anantdamle opened a new pull request #13616: [BEAM-11460] Support reading Parquet files with unknown schema
anantdamle opened a new pull request #13616:
URL: https://github.com/apache/beam/pull/13616
Data engineers encounter times when schema of Parquet file is unknown at the time of writing the pipeline or multiple schema may be present in different files. Reading Parquet files using ParquetIO requires providing an Avro (equivalent) schema, Many a times its not possible to know the schema of the Parquet files.
On the other hand [AvroIO](https://beam.apache.org/releases/javadoc/2.26.0/org/apache/beam/sdk/io/AvroIO.html) supports reading unknow schema files by providing a parse function : `#parseGenericRecords(SerializableFunction<GenericRecord,T>)`
Supporting this functionality in ParquetIO is simple and requires minimal changes to the ParquetIO surface.
------------------------
Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:
- [x] Added new tests for the feature in `ParquetIOTest`
- [x] Reviewers - @iemejia @aromanenko-dev
- [x] Update `CHANGES.md` with noteworthy changes.
- [x] If this contribution is large, please file an Apache [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.pdf).
created instead of [PR/13554](https://github.com/apache/beam/pull/13554) due to change in source branch.
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[GitHub] [beam] anantdamle commented on pull request #13616: [BEAM-11460] Support reading Parquet files with unknown schema
Posted by GitBox <gi...@apache.org>.
anantdamle commented on pull request #13616:
URL: https://github.com/apache/beam/pull/13616#issuecomment-751132675
@aromanenko-dev @iemejia have made all the requested changes. Kindly review.
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[GitHub] [beam] iemejia merged pull request #13616: [BEAM-11460] Support reading Parquet files with unknown schema
Posted by GitBox <gi...@apache.org>.
iemejia merged pull request #13616:
URL: https://github.com/apache/beam/pull/13616
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