[python] Add StreamReadBuilder and AsyncStreamingTableScan#7343
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tub wants to merge 2 commits intoapache:masterfrom
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[python] Add StreamReadBuilder and AsyncStreamingTableScan#7343tub wants to merge 2 commits intoapache:masterfrom
tub wants to merge 2 commits intoapache:masterfrom
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…sharding Add foundational infrastructure for pure-Python streaming reads: - Follow-up scanners (delta, changelog, incremental diff) for continuous snapshot polling - Consumer manager for persisting read progress - LRU caching for snapshots, manifests, and manifest lists - Batch existence checks for efficient file IO - Bucket-based sharding for parallel consumption - Row kind support in table reads - Streaming-related core options - Backtick support for identifier parsing Includes unit tests for all new components.
…ation Add core streaming read API: - StreamReadBuilder for configuring streaming reads with predicates, projections, consumer IDs, sharding, and poll intervals - AsyncStreamingTableScan with async generator and sync wrapper for continuous snapshot polling - Table interface additions: new_stream_read_builder() on Table, FileStoreTable, FormatTable (stub), IcebergTable (stub) - Minor fix in split_read.py - Add oss/lance extras to setup.py - Streaming reads documentation and supported features list Includes streaming table scan and sharding unit tests.
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This was referenced Mar 4, 2026
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Summary
PR 2 of 3 for pure-Python streaming reads. This PR adds the core streaming API:
new_stream_read_builder()on Table, FileStoreTable, FormatTable (stub), IcebergTable (stub)oss/lanceextras11 files changed, +2287 / -2 lines (incremental)
PR Stack
paimon tailcommand)Incremental diff (just this PR's changes): python-streaming-1-infra...tub:paimon:python-streaming-2-core
Merge workflow: Merge PR 1, rebase PR 2 onto updated master (PR 1 commits drop out), merge PR 2, repeat for PR 3.
Test plan
python -m pytest pypaimon/tests— 594 passed (9 pre-existing lance failures)python -c "from pypaimon import CatalogFactory"— no import errors🤖 Generated with Claude Code