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[2.47.0] - Unreleased

Highlights

  • New highly anticipated feature X added to Python SDK (#X).
  • New highly anticipated feature Y added to Java SDK (#Y).

I/Os

  • Support for X source added (Java/Python) (#X).

New Features / Improvements

  • The Flink runner now supports Flink 1.16.x (#25046).

Breaking Changes

  • If a main session fails to load, the pipeline will now fail at worker startup. (#25401).

Deprecations

  • X behavior is deprecated and will be removed in X versions (#X).

Bugfixes

  • Fixed X (Java/Python) (#X).

Known Issues

[2.46.0] - 2023-03-10

Highlights

  • Java SDK containers migrated to Eclipse Temurin as a base. This change migrates away from the deprecated OpenJDK container. Eclipse Temurin is currently based upon Ubuntu 22.04 while the OpenJDK container was based upon Debian 11.
  • RunInference PTransform will accept model paths as SideInputs in Python SDK. (#24042)
  • RunInference supports ONNX runtime in Python SDK (#22972)
  • Tensorflow Model Handler for RunInference in Python SDK (#25366)
  • Java SDK modules migrated to use :sdks:java:extensions:avro (#24748)

I/Os

  • Added in JmsIO a retry policy for failed publications (Java) (#24971).
  • Support for LZMA compression/decompression of text files added to the Python SDK (#25316)
  • Added ReadFrom/WriteTo Csv/Json as top-level transforms to the Python SDK.

New Features / Improvements

  • Add UDF metrics support for Samza portable mode.
  • Option for SparkRunner to avoid the need of SDF output to fit in memory (#23852). This helps e.g. with ParquetIO reads. Turn the feature on by adding experiment use_bounded_concurrent_output_for_sdf.
  • Add WatchFilePattern transform, which can be used as a side input to the RunInference PTransfrom to watch for model updates using a file pattern. (#24042)
  • Add support for loading TorchScript models with PytorchModelHandler. The TorchScript model path can be passed to PytorchModelHandler using torch_script_model_path=<path_to_model>. (#25321)
  • The Go SDK now requires Go 1.19 to build. (#25545)
  • The Go SDK now has an initial native Go implementation of a portable Beam Runner called Prism. (#24789)

Breaking Changes

  • The deprecated SparkRunner for Spark 2 (see 2.41.0) was removed (#25263).
  • Python's BatchElements performs more aggressive batching in some cases, capping at 10 second rather than 1 second batches by default and excluding fixed cost in this computation to better handle cases where the fixed cost is larger than a single second. To get the old behavior, one can pass target_batch_duration_secs_including_fixed_cost=1 to BatchElements.

Deprecations

  • Avro related classes are deprecated in module beam-sdks-java-core and will be eventually removed. Please, migrate to a new module beam-sdks-java-extensions-avro instead by importing the classes from org.apache.beam.sdk.extensions.avro package. For the sake of migration simplicity, the relative package path and the whole class hierarchy of Avro related classes in new module is preserved the same as it was before. For example, import org.apache.beam.sdk.extensions.avro.coders.AvroCoder class instead oforg.apache.beam.sdk.coders.AvroCoder. (#24749).

Bugfixes

  • Fixed X (Java/Python) (#X).

Known Issues

[2.45.0] - 2023-02-15

I/Os

  • Support for X source added (Java/Python) (#X).
  • MongoDB IO connector added (Go) (#24575).

New Features / Improvements

  • RunInference Wrapper with Sklearn Model Handler support added in Go SDK (#24497).
  • Adding override of allowed TLS algorithms (Java), now maintaining the disabled/legacy algorithms present in 2.43.0 (up to 1.8.0_342, 11.0.16, 17.0.2 for respective Java versions). This is accompanied by an explicit re-enabling of TLSv1 and TLSv1.1 for Java 8 and Java 11.
  • Add UDF metrics support for Samza portable mode.

Breaking Changes

  • Portable Java pipelines, Go pipelines, Python streaming pipelines, and portable Python batch pipelines on Dataflow are required to use Runner V2. The disable_runner_v2, disable_runner_v2_until_2023, disable_prime_runner_v2 experiments will raise an error during pipeline construction. You can no longer specify the Dataflow worker jar override. Note that non-portable Java jobs and non-portable Python batch jobs are not impacted. (#24515).
  • Beam now requires pyarrow>=3 and pandas>=1.4.3 since older versions are not compatible with numpy==1.24.0.

Bugfixes

  • Avoids Cassandra syntax error when user-defined query has no where clause in it (Java) (#24829).
  • Fixed JDBC connection failures (Java) during handshake due to deprecated TLSv1(.1) protocol for the JDK. (#24623)
  • Fixed Python BigQuery Batch Load write may truncate valid data when deposition sets to WRITE_TRUNCATE and incoming data is large (Python) (#24623).

[2.44.0] - 2023-01-12

I/Os

  • Support for Bigtable sink (Write and WriteBatch) added (Go) (#23324).
  • S3 implementation of the Beam filesystem (Go) (#23991).
  • Support for SingleStoreDB source and sink added (Java) (#22617).
  • Added support for DefaultAzureCredential authentication in Azure Filesystem (Python) (#24210).

New Features / Improvements

  • Beam now provides a portable "runner" that can render pipeline graphs with graphviz. See python -m apache_beam.runners.render --help for more details.
  • Local packages can now be used as dependencies in the requirements.txt file, rather than requiring them to be passed separately via the --extra_package option (Python) (#23684).
  • Pipeline Resource Hints now supported via --resource_hints flag (Go) (#23990).
  • Make Python SDK containers reusable on portable runners by installing dependencies to temporary venvs (BEAM-12792).
  • RunInference model handlers now support the specification of a custom inference function in Python (#22572)
  • Support for map_windows urn added to Go SDK (#24307).

Breaking Changes

  • ParquetIO.withSplit was removed since splittable reading has been the default behavior since 2.35.0. The effect of this change is to drop support for non-splittable reading (Java)(#23832).
  • beam-sdks-java-extensions-google-cloud-platform-core is no longer a dependency of the Java SDK Harness. Some users of a portable runner (such as Dataflow Runner v2) may have an undeclared dependency on this package (for example using GCS with TextIO) and will now need to declare the dependency.
  • beam-sdks-java-core is no longer a dependency of the Java SDK Harness. Users of a portable runner (such as Dataflow Runner v2) will need to provide this package and its dependencies.
  • Slices now use the Beam Iterable Coder. This enables cross language use, but breaks pipeline updates if a Slice type is used as a PCollection element or State API element. (Go)#24339

Deprecations

  • X behavior is deprecated and will be removed in X versions (#X).

Bugfixes

  • Fixed X (Java/Python) (#X).
  • Fixed JmsIO acknowledgment issue (Java) (#20814)
  • Fixed Beam SQL CalciteUtils (Java) and Cross-language JdbcIO (Python) did not support JDBC CHAR/VARCHAR, BINARY/VARBINARY logical types (#23747, #23526).
  • Ensure iterated and emitted types are used with the generic register package are registered with the type and schema registries.(Go) (#23889)

[2.43.0] - 2022-11-17

Highlights

  • Python 3.10 support in Apache Beam (#21458).
  • An initial implementation of a runner that allows us to run Beam pipelines on Dask. Try it out and give us feedback! (Python) (#18962).

I/Os

  • Decreased TextSource CPU utilization by 2.3x (Java) (#23193).
  • Fixed bug when using SpannerIO with RuntimeValueProvider options (Java) (#22146).
  • Fixed issue for unicode rendering on WriteToBigQuery (#22312)
  • Remove obsolete variants of BigQuery Read and Write, always using Beam-native variant (#23564 and #23559).
  • Bumped google-cloud-spanner dependency version to 3.x for Python SDK (#21198).

New Features / Improvements

  • Dataframe wrapper added in Go SDK via Cross-Language (with automatic expansion service). (Go) (#23384).
  • Name all Java threads to aid in debugging (#23049).
  • An initial implementation of a runner that allows us to run Beam pipelines on Dask. (Python) (#18962).
  • Allow configuring GCP OAuth scopes via pipeline options. This unblocks usages of Beam IOs that require additional scopes. For example, this feature makes it possible to access Google Drive backed tables in BigQuery (#23290).
  • An example for using Python RunInference from Java (#23290).
  • Data can now be read from BigQuery and directly plumbed into a DeferredDataframe in the Dataframe API. Users no longer have to re-specify the schema in this case (#22907).

Breaking Changes

  • CoGroupByKey transform in Python SDK has changed the output typehint. The typehint component representing grouped values changed from List to Iterable, which more accurately reflects the nature of the arbitrarily large output collection. #21556 Beam users may see an error on transforms downstream from CoGroupByKey. Users must change methods expecting a List to expect an Iterable going forward. See document for information and fixes.
  • The PortableRunner for Spark assumes Spark 3 as default Spark major version unless configured otherwise using --spark_version. Spark 2 support is deprecated and will be removed soon (#23728).

Bugfixes

  • Fixed Python cross-language JDBC IO Connector cannot read or write rows containing Numeric/Decimal type values (#19817).

[2.42.0] - 2022-10-17

Highlights

  • Added support for stateful DoFns to the Go SDK.
  • Added support for Batched DoFns to the Python SDK.

New Features / Improvements

  • Added support for Zstd compression to the Python SDK.
  • Added support for Google Cloud Profiler to the Go SDK.
  • Added support for stateful DoFns to the Go SDK.

Breaking Changes

  • The Go SDK's Row Coder now uses a different single-precision float encoding for float32 types to match Java's behavior (#22629).

Bugfixes

  • Fixed Python cross-language JDBC IO Connector cannot read or write rows containing Timestamp type values #19817.
  • Fixed AfterProcessingTime behavior in Python's DirectRunner to match Java (#23071)

Known Issues

  • Go SDK doesn't yet support Slowly Changing Side Input pattern (#23106)

[2.41.0] - 2022-08-23

I/Os

  • Projection Pushdown optimizer is now on by default for streaming, matching the behavior of batch pipelines since 2.38.0. If you encounter a bug with the optimizer, please file an issue and disable the optimizer using pipeline option --experiments=disable_projection_pushdown.

New Features / Improvements

  • Previously available in Java sdk, Python sdk now also supports logging level overrides per module. (#18222).
  • Added support for accessing GCP PubSub Message ordering keys (Java) (BEAM-13592)

Breaking Changes

  • Projection Pushdown optimizer may break Dataflow upgrade compatibility for optimized pipelines when it removes unused fields. If you need to upgrade and encounter a compatibility issue, disable the optimizer using pipeline option --experiments=disable_projection_pushdown.

Deprecations

  • Support for Spark 2.4.x is deprecated and will be dropped with the release of Beam 2.44.0 or soon after (Spark runner) (#22094).
  • The modules amazon-web-services and kinesis for AWS Java SDK v1 are deprecated in favor of amazon-web-services2 and will be eventually removed after a few Beam releases (Java) (#21249).

Bugfixes

  • Fixed a condition where retrying queries would yield an incorrect cursor in the Java SDK Firestore Connector (#22089).
  • Fixed plumbing allowed lateness in Go SDK. It was ignoring the user set value earlier and always used to set to 0. (#22474).

[2.40.0] - 2022-06-25

Highlights

  • Added RunInference API, a framework agnostic transform for inference. With this release, PyTorch and Scikit-learn are supported by the transform. See also example at apache_beam/examples/inference/pytorch_image_classification.py

I/Os

  • Upgraded to Hive 3.1.3 for HCatalogIO. Users can still provide their own version of Hive. (Java) (Issue-19554).

New Features / Improvements

  • Go SDK users can now use generic registration functions to optimize their DoFn execution. (BEAM-14347)
  • Go SDK users may now write self-checkpointing Splittable DoFns to read from streaming sources. (BEAM-11104)
  • Go SDK textio Reads have been moved to Splittable DoFns exclusively. (BEAM-14489)
  • Pipeline drain support added for Go SDK has now been tested. (BEAM-11106)
  • Go SDK users can now see heap usage, sideinput cache stats, and active process bundle stats in Worker Status. (BEAM-13829)

Breaking Changes

  • The Go Sdk now requires a minimum version of 1.18 in order to support generics (BEAM-14347).
  • synthetic.SourceConfig field types have changed to int64 from int for better compatibility with Flink's use of Logical types in Schemas (Go) (BEAM-14173)
  • Default coder updated to compress sources used with BoundedSourceAsSDFWrapperFn and UnboundedSourceAsSDFWrapper.

Bugfixes

  • Fixed Java expansion service to allow specific files to stage (BEAM-14160).
  • Fixed Elasticsearch connection when using both ssl and username/password (Java) (BEAM-14000)

[2.39.0] - 2022-05-25

Highlights

  • Watermark estimation is now supported in the Go SDK (BEAM-11105).
  • Support for impersonation credentials added to dataflow runner in the Java and Python SDK (BEAM-14014).
  • Implemented Apache PulsarIO (BEAM-8218).

I/Os

  • JmsIO gains the ability to map any kind of input to any subclass of javax.jms.Message (Java) (BEAM-16308).
  • JmsIO introduces the ability to write to dynamic topics (Java) (BEAM-16308).
    • A topicNameMapper must be set to extract the topic name from the input value.
    • A valueMapper must be set to convert the input value to JMS message.
  • Reduce number of threads spawned by BigqueryIO StreamingInserts ( BEAM-14283).
  • Implemented Apache PulsarIO (BEAM-8218).

New Features / Improvements

  • Support for flink scala 2.12, because most of the libraries support version 2.12 onwards. (beam-14386)
  • 'Manage Clusters' JupyterLab extension added for users to configure usage of Dataproc clusters managed by Interactive Beam (Python) (BEAM-14130).
  • Pipeline drain support added for Go SDK (BEAM-11106). Note: this feature is not yet fully validated and should be treated as experimental in this release.
  • DataFrame.unstack(), DataFrame.pivot() and Series.unstack() implemented for DataFrame API (BEAM-13948, BEAM-13966).
  • Support for impersonation credentials added to dataflow runner in the Java and Python SDK (BEAM-14014).
  • Implemented Jupyterlab extension for managing Dataproc clusters (BEAM-14130).
  • ExternalPythonTransform API added for easily invoking Python transforms from Java (BEAM-14143).
  • Added Add support for Elasticsearch 8.x (BEAM-14003).
  • Shard aware Kinesis record aggregation (AWS Sdk v2), (BEAM-14104).
  • Upgrade to ZetaSQL 2022.04.1 (BEAM-14348).
  • Fixed ReadFromBigQuery cannot be used with the interactive runner (BEAM-14112).

Breaking Changes

  • Unused functions ShallowCloneParDoPayload(), ShallowCloneSideInput(), and ShallowCloneFunctionSpec() have been removed from the Go SDK's pipelinex package (BEAM-13739).
  • JmsIO requires an explicit valueMapper to be set (BEAM-16308). You can use the TextMessageMapper to convert String inputs to JMS TestMessages:
  JmsIO.<String>write()
        .withConnectionFactory(jmsConnectionFactory)
        .withValueMapper(new TextMessageMapper());
  • Coders in Python are expected to inherit from Coder. (BEAM-14351).
  • New abstract method metadata() added to io.filesystem.FileSystem in the Python SDK. (BEAM-14314)

Deprecations

Bugfixes

  • Fixed Java Spanner IO NPE when ProjectID not specified in template executions (Java) (BEAM-14405).
  • Fixed potential NPE in BigQueryServicesImpl.getErrorInfo (Java) (BEAM-14133).

[2.38.0] - 2022-04-20

I/Os

  • Introduce projection pushdown optimizer to the Java SDK (BEAM-12976). The optimizer currently only works on the BigQuery Storage API, but more I/Os will be added in future releases. If you encounter a bug with the optimizer, please file a JIRA and disable the optimizer using pipeline option --experiments=disable_projection_pushdown.
  • A new IO for Neo4j graph databases was added. (BEAM-1857) It has the ability to update nodes and relationships using UNWIND statements and to read data using cypher statements with parameters.
  • amazon-web-services2 has reached feature parity and is finally recommended over the earlier amazon-web-services and kinesis modules (Java). These will be deprecated in one of the next releases (BEAM-13174).

New Features / Improvements

  • Pipeline dependencies supplied through --requirements_file will now be staged to the runner using binary distributions (wheels) of the PyPI packages for linux_x86_64 platform (BEAM-4032). To restore the behavior to use source distributions, set pipeline option --requirements_cache_only_sources. To skip staging the packages at submission time, set pipeline option --requirements_cache=skip (Python).
  • The Flink runner now supports Flink 1.14.x (BEAM-13106).
  • Interactive Beam now supports remotely executing Flink pipelines on Dataproc (Python) (BEAM-14071).

Breaking Changes

  • (Python) Previously DoFn.infer_output_types was expected to return Iterable[element_type] where element_type is the PCollection elemnt type. It is now expected to return element_type. Take care if you have overriden infer_output_type in a DoFn (this is not common). See BEAM-13860.
  • (amazon-web-services2) The types of awsRegion / endpoint in AwsOptions changed from String to Region / URI (BEAM-13563).

Deprecations

  • Beam 2.38.0 will be the last minor release to support Flink 1.11.
  • (amazon-web-services2) Client providers (withXYZClientProvider()) as well as IO specific RetryConfigurations are deprecated, instead use withClientConfiguration() or AwsOptions to configure AWS IOs / clients. Custom implementations of client providers shall be replaced with a respective ClientBuilderFactory and configured through AwsOptions (BEAM-13563).

Bugfixes

  • Fix S3 copy for large objects (Java) (BEAM-14011)
  • Fix quadratic behavior of pipeline canonicalization (Go) (BEAM-14128)
    • This caused unnecessarily long pre-processing times before job submission for large complex pipelines.
  • Fix pyarrow version parsing (Python)(BEAM-14235)

Known Issues

  • Some pipelines that use Java SpannerIO may raise a NPE when the project ID is not specified (BEAM-14405)

[2.37.0] - 2022-03-04

Highlights

  • Java 17 support for Dataflow (BEAM-12240).
    • Users using Dataflow Runner V2 may see issues with state cache due to inaccurate object sizes (BEAM-13695).
    • ZetaSql is currently unsupported (issue).
  • Python 3.9 support in Apache Beam (BEAM-12000).

I/Os

  • Go SDK now has wrappers for the following Cross Language Transforms from Java, along with automatic expansion service startup for each.

New Features / Improvements

  • DataFrame API now supports pandas 1.4.x (BEAM-13605).
  • Go SDK DoFns can now observe trigger panes directly (BEAM-13757).
  • Added option to specify a caching directory in Interactive Beam (Python) (BEAM-13685).
  • Added support for caching batch pipelines to GCS in Interactive Beam (Python) (BEAM-13734).

Breaking Changes

Deprecations

Bugfixes

Known Issues

  • On rare occations, Python Datastore source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)

[2.36.0] - 2022-02-07

I/Os

  • Support for stopReadTime on KafkaIO SDF (Java).(BEAM-13171).
  • Added ability to register URI schemes to use the S3 protocol via FileIO using amazon-web-services2 (amazon-web-services already had this ability). (BEAM-12435, BEAM-13245).

New Features / Improvements

  • Added support for cloudpickle as a pickling library for Python SDK (BEAM-8123). To use cloudpickle, set pipeline option: --pickler_lib=cloudpickle
  • Added option to specify triggering frequency when streaming to BigQuery (Python) (BEAM-12865).
  • Added option to enable caching uploaded artifacts across job runs for Python Dataflow jobs (BEAM-13459). To enable, set pipeline option: --enable_artifact_caching, this will be enabled by default in a future release.

Breaking Changes

  • Updated the jedis from 3.x to 4.x to Java RedisIO. If you are using RedisIO and using jedis directly, please refer to this page to update it. (BEAM-12092).
  • Datatype of timestamp fields in SqsMessage for AWS IOs for SDK v2 was changed from String to long, visibility of all fields was fixed from package private to public BEAM-13638.

Bugfixes

  • Properly check output timestamps on elements output from DoFns, timers, and onWindowExpiration in Java BEAM-12931.
  • Fixed a bug with DeferredDataFrame.xs when used with a non-tuple key (BEAM-13421).

Known Issues

  • Users may encounter an unexpected java.lang.ArithmeticException when outputting a timestamp for an element further than allowedSkew from an allowed DoFN skew set to a value more than Integer.MAX_VALUE.
  • On rare occations, Python Datastore source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Java SpannerIO source may swallow some exceptions. Users are adviced to upgrade to Beam 2.37.0 or later (BEAM-14005)

[2.35.0] - 2021-12-29

Highlights

  • MultiMap side inputs are now supported by the Go SDK (BEAM-3293).
  • Side inputs are supported within Splittable DoFns for Dataflow Runner V1 and Dataflow Runner V2. (BEAM-12522).
  • Upgrades Log4j version used in test suites (Apache Beam testing environment only, not for end user consumption) to 2.17.0(BEAM-13434). Note that Apache Beam versions do not depend on the Log4j 2 dependency (log4j-core) impacted by CVE-2021-44228. However we urge users to update direct and indirect dependencies (if any) on Log4j 2 to the latest version by updating their build configuration and redeploying impacted pipelines.

I/Os

  • We changed the data type for ranges in JdbcIO.readWithPartitions from int to long (BEAM-13149). This is a relatively minor breaking change, which we're implementing to improve the usability of the transform without increasing cruft. This transform is relatively new, so we may implement other breaking changes in the future to improve its usability.
  • Side inputs are supported within Splittable DoFns for Dataflow Runner V1 and Dataflow Runner V2. (BEAM-12522).

New Features / Improvements

  • Added custom delimiters to Python TextIO reads (BEAM-12730).
  • Added escapechar parameter to Python TextIO reads (BEAM-13189).
  • Splittable reading is enabled by default while reading data with ParquetIO (BEAM-12070).
  • DoFn Execution Time metrics added to Go (BEAM-13001).
  • Cross-bundle side input caching is now available in the Go SDK for runners that support the feature by setting the EnableSideInputCache hook (BEAM-11097).
  • Upgraded the GCP Libraries BOM version to 24.0.0 and associated dependencies (BEAM-11205). For Google Cloud client library versions set by this BOM, see this table.
  • Removed avro-python3 dependency in AvroIO. Fastavro has already been our Avro library of choice on Python 3. Boolean use_fastavro is left for api compatibility, but will have no effect.(BEAM-13016).
  • MultiMap side inputs are now supported by the Go SDK (BEAM-3293).
  • Remote packages can now be downloaded from locations supported by apache_beam.io.filesystems. The files will be downloaded on Stager and uploaded to staging location. For more information, see BEAM-11275

Breaking Changes

  • A new URN convention was adopted for cross-language transforms and existing URNs were updated. This may break advanced use-cases, for example, if a custom expansion service is used to connect diffrent Beam Java and Python versions. (BEAM-12047).
  • The upgrade to Calcite 1.28.0 introduces a breaking change in the SUBSTRING function in SqlTransform, when used with the Calcite dialect (BEAM-13099, CALCITE-4427).
  • ListShards (with DescribeStreamSummary) is used instead of DescribeStream to list shards in Kinesis streams (AWS SDK v2). Due to this change, as mentioned in AWS documentation, for fine-grained IAM policies it is required to update them to allow calls to ListShards and DescribeStreamSummary APIs. For more information, see Controlling Access to Amazon Kinesis Data Streams (BEAM-13233).

Deprecations

  • Non-splittable reading is deprecated while reading data with ParquetIO (BEAM-12070).

Bugfixes

  • Properly map main input windows to side input windows by default (Go) (BEAM-11087).
  • Fixed data loss when writing to DynamoDB without setting deduplication key names (Java) (BEAM-13009).
  • Go SDK Examples now have types and functions registered. (Go) (BEAM-5378)

Known Issues

  • Users of beam-sdks-java-io-hcatalog (and beam-sdks-java-extensions-sql-hcatalog) must take care to override the transitive log4j dependency when they add a hive dependency (BEAM-13499).
  • On rare occations, Python Datastore source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Java SpannerIO source may swallow some exceptions. Users are adviced to upgrade to Beam 2.37.0 or later (BEAM-14005)

[2.34.0] - 2021-11-11

Highlights

  • The Beam Java API for Calcite SqlTransform is no longer experimental (BEAM-12680).
  • Python's ParDo (Map, FlatMap, etc.) transforms now suport a with_exception_handling option for easily ignoring bad records and implementing the dead letter pattern.

I/Os

  • ReadFromBigQuery and ReadAllFromBigQuery now run queries with BATCH priority by default. The query_priority parameter is introduced to the same transforms to allow configuring the query priority (Python) (BEAM-12913).
  • [EXPERIMENTAL] Support for BigQuery Storage Read API added to ReadFromBigQuery. The newly introduced method parameter can be set as DIRECT_READ to use the Storage Read API. The default is EXPORT which invokes a BigQuery export request. (Python) (BEAM-10917).
  • [EXPERIMENTAL] Added use_native_datetime parameter to ReadFromBigQuery to configure the return type of DATETIME fields when using ReadFromBigQuery. This parameter can only be used when method = DIRECT_READ(Python) (BEAM-10917).
  • [EXPERIMENTAL] Added support for writing to Redis Streams as a sink in RedisIO (BEAM-13159)

New Features / Improvements

  • Upgraded to Calcite 1.26.0 (BEAM-9379).
  • Added a new dataframe extra to the Python SDK that tracks pandas versions we've verified compatibility with. We now recommend installing Beam with pip install apache-beam[dataframe] when you intend to use the DataFrame API (BEAM-12906).
  • Added an example of deploying Python Apache Beam job with Spark Cluster

Breaking Changes

  • SQL Rows are no longer flattened (BEAM-5505).
  • [Go SDK] beam.TryCrossLanguage's signature now matches beam.CrossLanguage. Like other Try functions it returns an error instead of panicking. (BEAM-9918).
  • BEAM-12925 was fixed. It used to silently pass incorrect null data read from JdbcIO. Pipelines affected by this will now start throwing failures instead of silently passing incorrect data.

Bugfixes

  • Fixed error while writing multiple DeferredFrames to csv (Python) (BEAM-12701).
  • Fixed error when importing the DataFrame API with pandas 1.0.x installed (BEAM-12945).
  • Fixed top.SmallestPerKey implementation in the Go SDK (BEAM-12946).

Known Issues

  • On rare occations, Python Datastore source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)
  • On rare occations, Java SpannerIO source may swallow some exceptions. Users are adviced to upgrade to Beam 2.37.0 or later (BEAM-14005)

[2.33.0] - 2021-10-07

Highlights

  • Go SDK is no longer experimental, and is officially part of the Beam release process.
    • Matching Go SDK containers are published on release.
    • Batch usage is well supported, and tested on Flink, Spark, and the Python Portable Runner.
      • SDK Tests are also run against Google Cloud Dataflow, but this doesn't indicate reciprical support.
    • The SDK supports Splittable DoFns, Cross Language transforms, and most Beam Model basics.
    • Go Modules are now used for dependency management.
      • This is a breaking change, see Breaking Changes for resolution.
      • Easier path to contribute to the Go SDK, no need to set up a GO_PATH.
      • Minimum Go version is now Go v1.16
    • See the announcement blogpost for full information once published.

New Features / Improvements

  • Projection pushdown in SchemaIO (BEAM-12609).
  • Upgrade Flink runner to Flink versions 1.13.2, 1.12.5 and 1.11.4 (BEAM-10955).

Breaking Changes

  • Go SDK pipelines require new import paths to use this release due to migration to Go Modules.
    • go.mod files will need to change to require github.com/apache/beam/sdks/v2.
    • Code depending on beam imports need to include v2 on the module path.
      • Fix by'v2' to the import paths, turning .../sdks/go/... to .../sdks/v2/go/...
    • No other code change should be required to use v2.33.0 of the Go SDK.
  • Since release 2.30.0, "The AvroCoder changes for BEAM-2303 [changed] the reader/writer from the Avro ReflectDatum* classes to the SpecificDatum* classes" (Java). This default behavior change has been reverted in this release. Use the useReflectApi setting to control it (BEAM-12628).

Deprecations

  • Python GBK will stop supporting unbounded PCollections that have global windowing and a default trigger in Beam 2.34. This can be overriden with --allow_unsafe_triggers. (BEAM-9487).
  • Python GBK will start requiring safe triggers or the --allow_unsafe_triggers flag starting with Beam 2.34. (BEAM-9487).

Bug fixes

  • Workaround to not delete orphaned files to avoid missing events when using Python WriteToFiles in streaming pipeline (BEAM-12950))

Known Issues

  • Spark 2.x users will need to update Spark's Jackson runtime dependencies (spark.jackson.version) to at least version 2.9.2, due to Beam updating its dependencies.
  • Go SDK jobs may produce "Failed to deduce Step from MonitoringInfo" messages following successful job execution. The messages are benign and don't indicate job failure. These are due to not yet handling PCollection metrics.
  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)

[2.32.0] - 2021-08-25

Highlights

I/Os

  • New experimental Firestore connector in Java SDK, providing sources and sinks to Google Cloud Firestore (BEAM-8376).
  • Added ability to use JdbcIO.Write.withResults without statement and preparedStatementSetter. (BEAM-12511)
  • Added ability to register URI schemes to use the S3 protocol via FileIO. (BEAM-12435).
  • Respect number of shards set in SnowflakeWrite batch mode. (BEAM-12715)
  • Java SDK: Update Google Cloud Healthcare IO connectors from using v1beta1 to using the GA version.

New Features / Improvements

  • Add support to convert Beam Schema to Avro Schema for JDBC LogicalTypes: VARCHAR, NVARCHAR, LONGVARCHAR, LONGNVARCHAR, DATE, TIME (Java)(BEAM-12385).
  • Reading from JDBC source by partitions (Java) (BEAM-12456).
  • PubsubIO can now write to a dead-letter topic after a parsing error (Java)(BEAM-12474).
  • New append-only option for Elasticsearch sink (Java) BEAM-12601
  • DatastoreIO: Write and delete operations now follow automatic gradual ramp-up, in line with best practices (Java/Python) (BEAM-12260, BEAM-12272).

Breaking Changes

Deprecations

  • Python GBK will stop supporting unbounded PCollections that have global windowing and a default trigger in Beam 2.33. This can be overriden with --allow_unsafe_triggers. (BEAM-9487).
  • Python GBK will start requiring safe triggers or the --allow_unsafe_triggers flag starting with Beam 2.33. (BEAM-9487).

Bugfixes

  • Fixed race condition in RabbitMqIO causing duplicate acks (Java) (BEAM-6516))

Known Issues

  • On rare occations, Python GCS source may swallow some exceptions. Users are adviced to upgrade to Beam 2.38.0 or later (BEAM-14282)

[2.31.0] - 2021-07-08

I/Os

  • Fixed bug in ReadFromBigQuery when a RuntimeValueProvider is used as value of table argument (Python) (BEAM-12514).

New Features / Improvements

  • CREATE FUNCTION DDL statement added to Calcite SQL syntax. JAR and AGGREGATE are now reserved keywords. (BEAM-12339).
  • Flink 1.13 is now supported by the Flink runner (BEAM-12277).
  • Python TriggerFn has a new may_lose_data method to signal potential data loss. Default behavior assumes safe (necessary for backwards compatibility). See Deprecations for potential impact of overriding this. (BEAM-9487).

Breaking Changes

  • Python Row objects are now sensitive to field order. So Row(x=3, y=4) is no longer considered equal to Row(y=4, x=3) (BEAM-11929).
  • Kafka Beam SQL tables now ascribe meaning to the LOCATION field; previously it was ignored if provided.
  • TopCombineFn disallow compare as its argument (Python) (BEAM-7372).
  • Drop support for Flink 1.10 (BEAM-12281).

Deprecations

  • Python GBK will stop supporting unbounded PCollections that have global windowing and a default trigger in Beam 2.33. This can be overriden with --allow_unsafe_triggers. (BEAM-9487).
  • Python GBK will start requiring safe triggers or the --allow_unsafe_triggers flag starting with Beam 2.33. (BEAM-9487).

[2.30.0] - 2021-06-09

I/Os

  • Allow splitting apart document serialization and IO for ElasticsearchIO
  • Support Bulk API request size optimization through addition of ElasticsearchIO.Write.withStatefulBatches

New Features / Improvements

  • Added capability to declare resource hints in Java and Python SDKs (BEAM-2085).
  • Added Spanner IO Performance tests for read and write. (Python) (BEAM-10029).
  • Added support for accessing GCP PubSub Message ordering keys, message IDs and message publish timestamp (Python) (BEAM-7819).
  • DataFrame API: Added support for collecting DataFrame objects in interactive Beam (BEAM-11855)
  • DataFrame API: Added apache_beam.examples.dataframe module (BEAM-12024)
  • Upgraded the GCP Libraries BOM version to 20.0.0 (BEAM-11205). For Google Cloud client library versions set by this BOM, see this table.

Breaking Changes

  • Drop support for Flink 1.8 and 1.9 (BEAM-11948).
  • MongoDbIO: Read.withFilter() and Read.withProjection() are removed since they are deprecated since Beam 2.12.0 (BEAM-12217).
  • RedisIO.readAll() was removed since it was deprecated since Beam 2.13.0. Please use RedisIO.readKeyPatterns() for the equivalent functionality. (BEAM-12214).
  • MqttIO.create() with clientId constructor removed because it was deprecated since Beam 2.13.0 (BEAM-12216).

[2.29.0] - 2021-04-29

Highlights

  • Spark Classic and Portable runners officially support Spark 3 (BEAM-7093).
  • Official Java 11 support for most runners (Dataflow, Flink, Spark) (BEAM-2530).
  • DataFrame API now supports GroupBy.apply (BEAM-11628).

I/Os

  • Added support for S3 filesystem on AWS SDK V2 (Java) (BEAM-7637)

New Features / Improvements

Breaking Changes

  • Deterministic coding enforced for GroupByKey and Stateful DoFns. Previously non-deterministic coding was allowed, resulting in keys not properly being grouped in some cases. (BEAM-11719) To restore the old behavior, one can register FakeDeterministicFastPrimitivesCoder with beam.coders.registry.register_fallback_coder(beam.coders.coders.FakeDeterministicFastPrimitivesCoder()) or use the allow_non_deterministic_key_coders pipeline option.

Deprecations

  • Support for Flink 1.8 and 1.9 will be removed in the next release (2.30.0) (BEAM-11948).

[2.28.0] - 2021-02-22

Highlights

I/Os

  • SpannerIO supports using BigDecimal for Numeric fields (BEAM-11643)
  • Add Beam schema support to ParquetIO (BEAM-11526)
  • Support ParquetTable Writer (BEAM-8202)
  • GCP BigQuery sink (streaming inserts) uses runner determined sharding (BEAM-11408)
  • PubSub support types: TIMESTAMP, DATE, TIME, DATETIME (BEAM-11533)

New Features / Improvements

  • ParquetIO add methods readGenericRecords and readFilesGenericRecords can read files with an unknown schema. See PR-13554 and (BEAM-11460)
  • Added support for thrift in KafkaTableProvider (BEAM-11482)
  • Added support for HadoopFormatIO to skip key/value clone (BEAM-11457)
  • Support Conversion to GenericRecords in Convert.to transform (BEAM-11571).
  • Support writes for Parquet Tables in Beam SQL (BEAM-8202).
  • Support reading Parquet files with unknown schema (BEAM-11460)
  • Support user configurable Hadoop Configuration flags for ParquetIO (BEAM-11527)
  • Expose commit_offset_in_finalize and timestamp_policy to ReadFromKafka (BEAM-11677)
  • S3 options does not provided to boto3 client while using FlinkRunner and Beam worker pool container (BEAM-11799)
  • HDFS not deduplicating identical configuration paths (BEAM-11329)
  • Hash Functions in BeamSQL (BEAM-10074)
  • Create ApproximateDistinct using HLL Impl (BEAM-10324)
  • Add Beam schema support to ParquetIO (BEAM-11526)
  • Add a Deque Encoder (BEAM-11538)
  • Hash functions in ZetaSQL (BEAM-11624)
  • Refactor ParquetTableProvider ()
  • Add JVM properties to JavaJobServer (BEAM-8344)
  • Single source of truth for supported Flink versions ()
  • Use metric for Python BigQuery streaming insert API latency logging (BEAM-11018)
  • Use metric for Java BigQuery streaming insert API latency logging (BEAM-11032)
  • Upgrade Flink runner to Flink versions 1.12.1 and 1.11.3 (BEAM-11697)
  • Upgrade Beam base image to use Tensorflow 2.4.1 (BEAM-11762)
  • Create Beam GCP BOM (BEAM-11665)

Breaking Changes

  • The Java artifacts "beam-sdks-java-io-kinesis", "beam-sdks-java-io-google-cloud-platform", and "beam-sdks-java-extensions-sql-zetasql" declare Guava 30.1-jre dependency (It was 25.1-jre in Beam 2.27.0). This new Guava version may introduce dependency conflicts if your project or dependencies rely on removed APIs. If affected, ensure to use an appropriate Guava version via dependencyManagement in Maven and force in Gradle.

[2.27.0] - 2021-01-08

I/Os

  • ReadFromMongoDB can now be used with MongoDB Atlas (Python) (BEAM-11266.)
  • ReadFromMongoDB/WriteToMongoDB will mask password in display_data (Python) (BEAM-11444.)
  • Support for X source added (Java/Python) (BEAM-X).
  • There is a new transform ReadAllFromBigQuery that can receive multiple requests to read data from BigQuery at pipeline runtime. See PR 13170, and BEAM-9650.

New Features / Improvements

  • Beam modules that depend on Hadoop are now tested for compatibility with Hadoop 3 (BEAM-8569). (Hive/HCatalog pending)
  • Publishing Java 11 SDK container images now supported as part of Apache Beam release process. (BEAM-8106)
  • Added Cloud Bigtable Provider extension to Beam SQL (BEAM-11173, BEAM-11373)
  • Added a schema provider for thrift data (BEAM-11338)
  • Added combiner packing pipeline optimization to Dataflow runner. (BEAM-10641)
  • Support for the Deque structure by adding a coder (BEAM-11538)

Breaking Changes

  • HBaseIO hbase-shaded-client dependency should be now provided by the users (BEAM-9278).
  • --region flag in amazon-web-services2 was replaced by --awsRegion (BEAM-11331).

[2.26.0] - 2020-12-11

Highlights

  • Splittable DoFn is now the default for executing the Read transform for Java based runners (Spark with bounded pipelines) in addition to existing runners from the 2.25.0 release (Direct, Flink, Jet, Samza, Twister2). The expected output of the Read transform is unchanged. Users can opt-out using --experiments=use_deprecated_read. The Apache Beam community is looking for feedback for this change as the community is planning to make this change permanent with no opt-out. If you run into an issue requiring the opt-out, please send an e-mail to [email protected] specifically referencing BEAM-10670 in the subject line and why you needed to opt-out. (Java) (BEAM-10670)

I/Os

  • Java BigQuery streaming inserts now have timeouts enabled by default. Pass --HTTPWriteTimeout=0 to revert to the old behavior. (BEAM-6103)
  • Added support for Contextual Text IO (Java), a version of text IO that provides metadata about the records (BEAM-10124). Support for this IO is currently experimental. Specifically, there are no update-compatibility guarantees for streaming jobs with this IO between current future verisons of Apache Beam SDK.

New Features / Improvements

  • Added support for avro payload format in Beam SQL Kafka Table (BEAM-10885)
  • Added support for json payload format in Beam SQL Kafka Table (BEAM-10893)
  • Added support for protobuf payload format in Beam SQL Kafka Table (BEAM-10892)
  • Added support for avro payload format in Beam SQL Pubsub Table (BEAM-5504)
  • Added option to disable unnecessary copying between operators in Flink Runner (Java) (BEAM-11146)
  • Added CombineFn.setup and CombineFn.teardown to Python SDK. These methods let you initialize the CombineFn's state before any of the other methods of the CombineFn is executed and clean that state up later on. If you are using Dataflow, you need to enable Dataflow Runner V2 by passing --experiments=use_runner_v2 before using this feature. (BEAM-3736)
  • Added support for NestedValueProvider for the Python SDK (BEAM-10856).

Breaking Changes

  • BigQuery's DATETIME type now maps to Beam logical type org.apache.beam.sdk.schemas.logicaltypes.SqlTypes.DATETIME
  • Pandas 1.x is now required for dataframe operations.

Known Issues

  • Non-idempotent combiners built via CombineFn.from_callable() or CombineFn.maybe_from_callable() can lead to incorrect behavior. (BEAM-11522).

[2.25.0] - 2020-10-23

Highlights

  • Splittable DoFn is now the default for executing the Read transform for Java based runners (Direct, Flink, Jet, Samza, Twister2). The expected output of the Read transform is unchanged. Users can opt-out using --experiments=use_deprecated_read. The Apache Beam community is looking for feedback for this change as the community is planning to make this change permanent with no opt-out. If you run into an issue requiring the opt-out, please send an e-mail to [email protected] specifically referencing BEAM-10670 in the subject line and why you needed to opt-out. (Java) (BEAM-10670)

I/Os

  • Added cross-language support to Java's KinesisIO, now available in the Python module apache_beam.io.kinesis (BEAM-10138, BEAM-10137).
  • Update Snowflake JDBC dependency for SnowflakeIO (BEAM-10864)
  • Added cross-language support to Java's SnowflakeIO.Write, now available in the Python module apache_beam.io.snowflake (BEAM-9898).
  • Added delete function to Java's ElasticsearchIO#Write. Now, Java's ElasticsearchIO can be used to selectively delete documents using withIsDeleteFn function (BEAM-5757).
  • Java SDK: Added new IO connector for InfluxDB - InfluxDbIO (BEAM-2546).
  • Config options added for Python's S3IO (BEAM-9094)

New Features / Improvements

  • Support for repeatable fields in JSON decoder for ReadFromBigQuery added. (Python) (BEAM-10524)
  • Added an opt-in, performance-driven runtime type checking system for the Python SDK (BEAM-10549). More details will be in an upcoming blog post.
  • Added support for Python 3 type annotations on PTransforms using typed PCollections (BEAM-10258). More details will be in an upcoming blog post.
  • Improved the Interactive Beam API where recording streaming jobs now start a long running background recording job. Running ib.show() or ib.collect() samples from the recording (BEAM-10603).
  • In Interactive Beam, ib.show() and ib.collect() now have "n" and "duration" as parameters. These mean read only up to "n" elements and up to "duration" seconds of data read from the recording (BEAM-10603).
  • Initial preview of Dataframes support. See also example at apache_beam/examples/wordcount_dataframe.py
  • Fixed support for type hints on @ptransform_fn decorators in the Python SDK. (BEAM-4091) This has not enabled by default to preserve backwards compatibility; use the --type_check_additional=ptransform_fn flag to enable. It may be enabled by default in future versions of Beam.

Breaking Changes

  • Python 2 and Python 3.5 support dropped (BEAM-10644, BEAM-9372).
  • Pandas 1.x allowed. Older version of Pandas may still be used, but may not be as well tested.

Deprecations

  • Python transform ReadFromSnowflake has been moved from apache_beam.io.external.snowflake to apache_beam.io.snowflake. The previous path will be removed in the future versions.

Known Issues

  • Dataflow streaming timers once against not strictly time ordered when set earlier mid-bundle, as the fix for BEAM-8543 introduced more severe bugs and has been rolled back.
  • Default compressor change breaks dataflow python streaming job update compatibility. Please use python SDK version <= 2.23.0 or > 2.25.0 if job update is critical.(BEAM-11113)

[2.24.0] - 2020-09-18

Highlights

  • Apache Beam 2.24.0 is the last release with Python 2 and Python 3.5 support.

I/Os

  • New overloads for BigtableIO.Read.withKeyRange() and BigtableIO.Read.withRowFilter() methods that take ValueProvider as a parameter (Java) (BEAM-10283).
  • The WriteToBigQuery transform (Python) in Dataflow Batch no longer relies on BigQuerySink by default. It relies on a new, fully-featured transform based on file loads into BigQuery. To revert the behavior to the old implementation, you may use --experiments=use_legacy_bq_sink.
  • Add cross-language support to Java's JdbcIO, now available in the Python module apache_beam.io.jdbc (BEAM-10135, BEAM-10136).
  • Add support of AWS SDK v2 for KinesisIO.Read (Java) (BEAM-9702).
  • Add streaming support to SnowflakeIO in Java SDK (BEAM-9896)
  • Support reading and writing to Google Healthcare DICOM APIs in Python SDK (BEAM-10601)
  • Add dispositions for SnowflakeIO.write (BEAM-10343)
  • Add cross-language support to SnowflakeIO.Read now available in the Python module apache_beam.io.external.snowflake (BEAM-9897).

New Features / Improvements

  • Shared library for simplifying management of large shared objects added to Python SDK. An example use case is sharing a large TF model object across threads (BEAM-10417).
  • Dataflow streaming timers are not strictly time ordered when set earlier mid-bundle (BEAM-8543).
  • OnTimerContext should not create a new one when processing each element/timer in FnApiDoFnRunner (BEAM-9839)
  • Key should be available in @OnTimer methods (Spark Runner) (BEAM-9850)

Breaking Changes

  • WriteToBigQuery transforms now require a GCS location to be provided through either custom_gcs_temp_location in the constructor of WriteToBigQuery or the fallback option --temp_location, or pass method="STREAMING_INSERTS" to WriteToBigQuery (BEAM-6928).
  • Python SDK now understands typing.FrozenSet type hints, which are not interchangeable with typing.Set. You may need to update your pipelines if type checking fails. (BEAM-10197)

Known issues

  • When a timer fires but is reset prior to being executed, a watermark hold may be leaked, causing a stuck pipeline BEAM-10991.
  • Default compressor change breaks dataflow python streaming job update compatibility. Please use python SDK version <= 2.23.0 or > 2.25.0 if job update is critical.(BEAM-11113)

[2.23.0] - 2020-06-29

Highlights

I/Os

  • Support for reading from Snowflake added (Java) (BEAM-9722).
  • Support for writing to Splunk added (Java) (BEAM-8596).
  • Support for assume role added (Java) (BEAM-10335).
  • A new transform to read from BigQuery has been added: apache_beam.io.gcp.bigquery.ReadFromBigQuery. This transform is experimental. It reads data from BigQuery by exporting data to Avro files, and reading those files. It also supports reading data by exporting to JSON files. This has small differences in behavior for Time and Date-related fields. See Pydoc for more information.

New Features / Improvements

  • Update Snowflake JDBC dependency and add application=beam to connection URL (BEAM-10383).

Breaking Changes

  • RowJson.RowJsonDeserializer, JsonToRow, and PubsubJsonTableProvider now accept "implicit nulls" by default when deserializing JSON (Java) (BEAM-10220). Previously nulls could only be represented with explicit null values, as in {"foo": "bar", "baz": null}, whereas an implicit null like {"foo": "bar"} would raise an exception. Now both JSON strings will yield the same result by default. This behavior can be overridden with RowJson.RowJsonDeserializer#withNullBehavior.
  • Fixed a bug in GroupIntoBatches experimental transform in Python to actually group batches by key. This changes the output type for this transform (BEAM-6696).

Deprecations

  • Remove Gearpump runner. (BEAM-9999)
  • Remove Apex runner. (BEAM-9999)
  • RedisIO.readAll() is deprecated and will be removed in 2 versions, users must use RedisIO.readKeyPatterns() as a replacement (BEAM-9747).

Known Issues

  • Fixed X (Java/Python) (BEAM-X).

[2.22.0] - 2020-06-08

Highlights

I/Os

  • Basic Kafka read/write support for DataflowRunner (Python) (BEAM-8019).
  • Sources and sinks for Google Healthcare APIs (Java)(BEAM-9468).
  • Support for writing to Snowflake added (Java) (BEAM-9894).

New Features / Improvements

  • --workerCacheMB flag is supported in Dataflow streaming pipeline (BEAM-9964)
  • --direct_num_workers=0 is supported for FnApi runner. It will set the number of threads/subprocesses to number of cores of the machine executing the pipeline (BEAM-9443).
  • Python SDK now has experimental support for SqlTransform (BEAM-8603).
  • Add OnWindowExpiration method to Stateful DoFn (BEAM-1589).
  • Added PTransforms for Google Cloud DLP (Data Loss Prevention) services integration (BEAM-9723):
    • Inspection of data,
    • Deidentification of data,
    • Reidentification of data.
  • Add a more complete I/O support matrix in the documentation site (BEAM-9916).
  • Upgrade Sphinx to 3.0.3 for building PyDoc.
  • Added a PTransform for image annotation using Google Cloud AI image processing service (BEAM-9646)
  • Dataflow streaming timers are not strictly time ordered when set earlier mid-bundle (BEAM-8543).

Breaking Changes

  • The Python SDK now requires --job_endpoint to be set when using --runner=PortableRunner (BEAM-9860). Users seeking the old default behavior should set --runner=FlinkRunner instead.

Deprecations

Known Issues

[2.21.0] - 2020-05-27

Highlights

I/Os

  • Python: Deprecated module apache_beam.io.gcp.datastore.v1 has been removed as the client it uses is out of date and does not support Python 3 (BEAM-9529). Please migrate your code to use apache_beam.io.gcp.datastore.v1new. See the updated datastore_wordcount for example usage.
  • Python SDK: Added integration tests and updated batch write functionality for Google Cloud Spanner transform (BEAM-8949).

New Features / Improvements

  • Python SDK will now use Python 3 type annotations as pipeline type hints. (#10717)

    If you suspect that this feature is causing your pipeline to fail, calling apache_beam.typehints.disable_type_annotations() before pipeline creation will disable is completely, and decorating specific functions (such as process()) with @apache_beam.typehints.no_annotations will disable it for that function.

    More details will be in Ensuring Python Type Safety and an upcoming blog post.

  • Java SDK: Introducing the concept of options in Beam Schemas. These options add extra context to fields and schemas. This replaces the current Beam metadata that is present in a FieldType only, options are available in fields and row schemas. Schema options are fully typed and can contain complex rows. Remark: Schema aware is still experimental. (BEAM-9035)

  • Java SDK: The protobuf extension is fully schema aware and also includes protobuf option conversion to beam schema options. Remark: Schema aware is still experimental. (BEAM-9044)

  • Added ability to write to BigQuery via Avro file loads (Python) (BEAM-8841)

    By default, file loads will be done using JSON, but it is possible to specify the temp_file_format parameter to perform file exports with AVRO. AVRO-based file loads work by exporting Python types into Avro types, so to switch to Avro-based loads, you will need to change your data types from Json-compatible types (string-type dates and timestamp, long numeric values as strings) into Python native types that are written to Avro (Python's date, datetime types, decimal, etc). For more information see https://cloud.google.com/bigquery/docs/loading-data-cloud-storage-avro#avro_conversions.

  • Added integration of Java SDK with Google Cloud AI VideoIntelligence service (BEAM-9147)

  • Added integration of Java SDK with Google Cloud AI natural language processing API (BEAM-9634)

  • docker-pull-licenses tag was introduced. Licenses/notices of third party dependencies will be added to the docker images when docker-pull-licenses was set. The files are added to /opt/apache/beam/third_party_licenses/. By default, no licenses/notices are added to the docker images. (BEAM-9136)

Breaking Changes

  • Dataflow runner now requires the --region option to be set, unless a default value is set in the environment (BEAM-9199). See here for more details.
  • HBaseIO.ReadAll now requires a PCollection of HBaseIO.Read objects instead of HBaseQuery objects (BEAM-9279).
  • ProcessContext.updateWatermark has been removed in favor of using a WatermarkEstimator (BEAM-9430).
  • Coder inference for PCollection of Row objects has been disabled (BEAM-9569).
  • Go SDK docker images are no longer released until further notice.

Deprecations

  • Java SDK: Beam Schema FieldType.getMetadata is now deprecated and is replaced by the Beam Schema Options, it will be removed in version 2.23.0. (BEAM-9704)
  • The --zone option in the Dataflow runner is now deprecated. Please use --worker_zone instead. (BEAM-9716)

Known Issues

[2.20.0] - 2020-04-15

Highlights

I/Os

  • Java SDK: Adds support for Thrift encoded data via ThriftIO. (BEAM-8561)
  • Java SDK: KafkaIO supports schema resolution using Confluent Schema Registry. (BEAM-7310)
  • Java SDK: Add Google Cloud Healthcare IO connectors: HL7v2IO and FhirIO (BEAM-9468)
  • Python SDK: Support for Google Cloud Spanner. This is an experimental module for reading and writing data from Google Cloud Spanner (BEAM-7246).
  • Python SDK: Adds support for standard HDFS URLs (with server name). (#10223).

New Features / Improvements

  • New AnnotateVideo & AnnotateVideoWithContext PTransform's that integrates GCP Video Intelligence functionality. (Python) (BEAM-9146)
  • New AnnotateImage & AnnotateImageWithContext PTransform's for element-wise & batch image annotation using Google Cloud Vision API. (Python) (BEAM-9247)
  • Added a PTransform for inspection and deidentification of text using Google Cloud DLP. (Python) (BEAM-9258)
  • New AnnotateText PTransform that integrates Google Cloud Natural Language functionality (Python) (BEAM-9248)
  • ReadFromBigQuery now supports value providers for the query string (Python) (BEAM-9305)
  • Direct runner for FnApi supports further parallelism (Python) (BEAM-9228)
  • Support for @RequiresTimeSortedInput in Flink and Spark (Java) (BEAM-8550)

Breaking Changes

  • ReadFromPubSub(topic=) in Python previously created a subscription under the same project as the topic. Now it will create the subscription under the project specified in pipeline_options. If the project is not specified in pipeline_options, then it will create the subscription under the same project as the topic. (BEAM-3453).
  • SpannerAccessor in Java is now package-private to reduce API surface. SpannerConfig.connectToSpanner has been moved to SpannerAccessor.create. (BEAM-9310).
  • ParquetIO hadoop dependency should be now provided by the users (BEAM-8616).
  • Docker images will be deployed to apache/beam repositories from 2.20. They used to be deployed to apachebeam repository. (BEAM-9063)
  • PCollections now have tags inferred from the result type (e.g. the keys of a dict or index of a tuple). Users may expect the old implementation which gave PCollection output ids a monotonically increasing id. To go back to the old implementation, use the force_generated_pcollection_output_ids experiment.

Deprecations

Bugfixes

  • Fixed numpy operators in ApproximateQuantiles (Python) (BEAM-9579).
  • Fixed exception when running in IPython notebook (Python) (BEAM-X9277).
  • Fixed Flink uberjar job termination bug. (BEAM-9225)
  • Fixed SyntaxError in process worker startup (BEAM-9503)
  • Key should be available in @OnTimer methods (Java) (BEAM-1819).

Known Issues

[2.19.0] - 2020-01-31

  • For versions 2.19.0 and older release notes are available on Apache Beam Blog.