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
- WriteToBigQuery: Schema auto-detection is not supported.
- BigQueryBatchFileLoads does not bundle rows correctly in streaming mode in python
- Dataflow can't pickle WeakRefDictionary
- Java SDK Harness throws IllegalStateException with user states in finishBundle
- Respect timestamp OutputTime Windowing Strategy configuration in Lifted CombineFns.
- Java + Universal Local Runner: custom WindowFn support seems incomplete
- Python SDK should set merge status to "ALREADY_MERGED"
- Writing containers containing nested Decimal to BigQuery fails
- Unbounded sources unable to recover from checkpointMark when withMaxReadTime() is used
- HDFS file writing has intermittent failures from 2.16 (and above)
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- Java not yet supported