beam
https://github.com/apache/beam
Java
Apache Beam is a unified programming model for Batch and Streaming data processing.
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- Issues
- ApiSurfaceTest checks the classpath, not the API surface
- Fully specify the length prefix coder
- The Java SDK Harness and runners-core-construction payloads should be consistent
- SerializableCoder#structuralValue should be more effective for types which don't define an equals method
- Using ValueProvider<Long> with FixedWindows and Duration
- Prototype of retractions support by DirectRunner
- Restore proto round trip for Java DirectRunner (was: Performance degradation on the direct runner)
- Support system properties source for pipeline options
- DoFn.XxxParam does not work for Map and FlatMap
- Avoid pickling PTransforms in proto representation
- Docs
- Java not yet supported