Apache Beam 2.19.0

We are happy to present the new 2.19.0 release of Beam. This release includes both improvements and new functionality. See the download page for this release.

For more information on changes in 2.19.0, check out the detailed release notes.



  • BEAM-1440 Create a BigQuery source (that implements iobase.BoundedSource) for Python SDK
  • BEAM-2572 Implement an S3 filesystem for Python SDK
  • BEAM-5192 Support Elasticsearch 7.x
  • BEAM-8745 More fine-grained controls for the size of a BigQuery Load job
  • BEAM-8801 PubsubMessageToRow should not check useFlatSchema() in processElement
  • BEAM-8953 Extend ParquetIO.Read/ReadFiles.Builder to support Avro GenericData model
  • BEAM-8946 Report collection size from MongoDBIOIT
  • BEAM-8978 Report saved data size from HadoopFormatIOIT

New Features / Improvements

  • BEAM-6008 Improve error reporting in Java/Python PortableRunner
  • BEAM-8296 Containerize the Spark job server
  • BEAM-8746 Allow the local job service to work from inside docker
  • BEAM-8837 PCollectionVisualizationTest: possible bug
  • BEAM-8139 Execute portable Spark application jar
  • BEAM-9019 Improve Spark Encoders (wrappers of beam coders)
  • BEAM-9053 Improve error message when unable to get the correct filesystem for specified path in Python SDK) Improve error message when unable to get the correct filesystem for specified path in Python SDK
  • BEAM-9055 Unify the config names of Fn Data API across languages


  • BEAM-5690 Issue with GroupByKey in BeamSql using SparkRunner
  • BEAM-8993 [SQL] MongoDb should use predicate push-down
  • BEAM-8844 [SQL] Create performance tests for BigQueryTable
  • BEAM-9023 Upgrade to ZetaSQL 2019.12.1

Breaking Changes

  • BEAM-8989 Backwards incompatible change in ParDo.getSideInputs (caught by failure when running Apache Nemo quickstart)
  • BEAM-8402 Backwards incompatible change related to how Environments are represented in Python DirectRunner.
  • BEAM-9218 Template staging broken on Beam 2.18.0

Dependency Changes

  • BEAM-8696 Beam Dependency Update Request: com.google.protobuf:protobuf-java
  • BEAM-8701 Beam Dependency Update Request: commons-io:commons-io
  • BEAM-8716 Beam Dependency Update Request: org.apache.commons:commons-csv
  • BEAM-8717 Beam Dependency Update Request: org.apache.commons:commons-lang3
  • BEAM-8749 Beam Dependency Update Request: com.datastax.cassandra:cassandra-driver-mapping
  • BEAM-5546 Beam Dependency Update Request: commons-codec:commons-codec


  • BEAM-9123 HadoopResourceId returns wrong directory name
  • BEAM-8962 FlinkMetricContainer causes churn in the JobManager and lets the web frontend malfunction
  • BEAM-5495 PipelineResources algorithm is not working in most environments
  • BEAM-8025 Cassandra IO classMethod test is flaky
  • BEAM-8577 FileSystems may have not be initialized during ResourceId deserialization
  • BEAM-8582 Python SDK emits duplicate records for Default and AfterWatermark triggers
  • BEAM-8943 SDK harness servers don’t shut down properly when SDK harness environment cleanup fails
  • BEAM-8995 apache_beam.io.gcp.bigquery_read_it_test failing on Py3.5 PC with: TypeError: the JSON object must be str, not ‘bytes’
  • BEAM-8999 PGBKCVOperation does not respect timestamp combiners
  • BEAM-9050 Beam pickler doesn’t pickle classes that have module set to None.
  • Various bug fixes and performance improvements.

List of Contributors

According to git shortlog, the following people contributed to the 2.19.0 release. Thank you to all contributors!

Ahmet Altay, Alex Amato, Alexey Romanenko, Andrew Pilloud, Ankur Goenka, Anton Kedin, Boyuan Zhang, Brian Hulette, Brian Martin, Chamikara Jayalath, Charles Chen, Craig Chambers, Daniel Oliveira, David Moravek, David Rieber, Dustin Rhodes, Etienne Chauchot, Gleb Kanterov, Hai Lu, Heejong Lee, Ismaël Mejía, Jan Lukavský, Jason Kuster, Jean-Baptiste Onofré, Jeff Klukas, João Cabrita, J Ross Thomson, Juan Rael, Juta, Kasia Kucharczyk, Kengo Seki, Kenneth Jung, Kenneth Knowles, Kyle Weaver, Kyle Winkelman, Lukas Drbal, Łukasz Gajowy, Marek Simunek, Mark Liu, Maximilian Michels, Melissa Pashniak, Michael Luckey, Michal Walenia, Mike Pedersen, Mikhail Gryzykhin, Niel Markwick, Pablo Estrada, Pascal Gula, Reuven Lax, Rob, Robbe Sneyders, Robert Bradshaw, Robert Burke, Rui Wang, Ruoyun Huang, Ryan Williams, Sam Rohde, Sam Whittle, Scott Wegner, Thomas Weise, Tianyang Hu, ttanay, tvalentyn, Tyler Akidau, Udi Meiri, Valentyn Tymofieiev, Xinyu Liu, XuMingmin