[python] Add streaming infrastructure: scanners, consumers, caching#7342
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tub wants to merge 1 commit intoapache:masterfrom
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[python] Add streaming infrastructure: scanners, consumers, caching#7342tub wants to merge 1 commit intoapache:masterfrom
tub wants to merge 1 commit intoapache:masterfrom
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This was referenced Mar 4, 2026
…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.
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Thanks @tub for the contribution! This feature looks amazing! Can you split this PR too? (I know the feature already be split to 3 PRs, but this PR is too large...) For example, consumer and cosumer_manager can be a separate PR. |
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Can you split this PR too? (I know the feature already be split to 3 PRs,
but this PR is too large...)
Sure. I was trying to get a balance between number of stacked PRs and the
size of the change. Either way, it’s a big change. Happy to split it more.
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Superseded by smaller stacked PRs: 1a (caching), 1b (scanners), 1c (consumer) |
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Summary
PR 1 of 3 for pure-Python streaming reads. This PR adds foundational infrastructure:
25 files changed, +2701 / -31 lines
PR Stack
paimon tailcommand)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/testspython -c "from pypaimon import CatalogFactory"— no import errors🤖 Generated with Claude Code