All future releases will be announced on Release Notes: Dataflow SDK for Python and releases will be available on PyPI.

See README.md for more information.

The 0.2.7 release includes the following changes:

• Introduce OperationCounters.should_sample for sampling for size estimation.
• Implement fixed sharding in TextFileSink.
• Use multiple file rename threads in finalize_write method.
• Retry idempotent I/O operations on GCS timeout.

The 0.2.6 release includes the following changes:

• Allow Pipeline objects to be used in Python with statements.
• Several bug fixes.

The 0.2.5 release includes the following changes:

• Support for creating custom sources, and reading them with DirectRunner and DataflowRunner.
• DiskCachedPipelineRunner as a disk backed alternative to DirectRunner.
• Ignore undeclared side outputs of DoFns in cloud executor.
• Fix pickling issue when the Seaborn package is loaded.
• Enable gzip compression on text files sink.

The 0.2.4 release includes the following changes:

• Support for large iterable side inputs.
• Enable support for all supported counter types.
• Modify --requirements_file behavior to locally cache packages.
• Support for non-native TextFileSink.
• Several fixes.

The 0.2.3 release includes several fixes:

• Removed version pin for google-apitools package.
• Removed version pin for oath2client package.
• Better inter-op with the gcloud package
• Raising correct exception for failures in start/finish DoFn methods.

The 0.2.2 release includes the following changes:

• Improved memory footprint for DirectPipelineRunner.
• Multiple bug fixes (BigQuerySink schema handling for record field types, more clear error messages for missing files, etc.).
• Several performance improvements (cythonize some files, reduced debug logging, etc.).
• New example
  using more complex BigQuery schemas

This release supports only batch execution. Streaming processing is not available yet.
The batch execution can be done locally (for development/testing) or in the Google cloud using the Cloud Dataflow service. Running against the Google cloud requires whitelisting using this form.

The 0.2.1 release includes the following changes:

• Optimized performance for the following features:
  • Logging
  • Shuffle Writing
  • Using Coders
  • Compiling some of the worker modules with Cython
• Changed the default behavior for Cloud execution: Instead of downloading the SDK from a Cloud Storage bucket, you now download the SDK as a tarball from GitHub. When you run jobs using the Dataflow service, the SDK version used will match the version you've downloaded (to your local environment). You can use the --sdk_location pipeline option to override this behavior and provide an explicit tarball location (Cloud Storage path or URL).
• Fixed several pickling issues related to how Dataflow serializes user functions and data.
• Fixed several worker lease expiration issues experienced when processing large datasets.
• Improved validation to detect various common errors, such as access issues and invalid parameter combinations, much earlier in time.

Initial release of the open-sourced Datafow SDK for Python.