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
- IO ITs: add validation of row content
- Consider removing TimeDomain from user APIs
- StateSpecs.combiningValue interface is very awkward to use
- outputWithTimestamp() accepts timestamps that will fail preconditions
- FileBasedSink could write tmp files above the output prefix.
- Timestamp precision and byte representation should be consistent across SDKs
- DoFnSignature should have info on the fn's side inputs and outputs
- Flink runner: submit job to a Flink-on-YARN cluster
- FileIOChannelFactory.match() traverses entire parent directory recursively
- Code coverage numbers are not accurate
- Docs
- Java not yet supported