[python] Pipeline split reads in Arrow batch reader#8807
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XiaoHongbo-Hope wants to merge 3 commits into
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[python] Pipeline split reads in Arrow batch reader#8807XiaoHongbo-Hope wants to merge 3 commits into
XiaoHongbo-Hope wants to merge 3 commits into
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Purpose
Pipeline split reads in
to_arrow_batch_readerwithout materializing the full result.The reader uses bounded per-split queues, preserves input split order, and follows
parallelism/read.parallelism. This benefits multi-split streaming consumers such as Ray, BLOB streaming, and batch-oriented training readers.Tests
pypaimon/tests/reader_parallel_test.pypypaimon/tests/ray_data_test.pyDedicatedFormatWriterTest#test_to_arrow_batch_readerBlobParallelismTest#test_to_arrow_batch_reader_blob_parallelismMultimodalTableTest#test_scan_stream_blobs