[doc] Add reading blob columns section to daft documentation#8190

Merged

JingsongLi merged 12 commits into

apache:masterfrom

XiaoHongbo-Hope:daft_with_blob

Jun 10, 2026

Commits on Jun 10, 2026

Add Reading Blob Columns section to Daft documentation
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Expand blob reading docs: lazy loading, parallel reads, migration from daft built-in
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Soften caution wording for Daft built-in connector blob limitation
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Use generic column names in blob reading examples
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Add file.length example for getting blob size without I/O
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Reorganize blob examples: file.length first, file.open for content
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Remove unnecessary note about col.length()
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Simplify parallel blob reading example
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Add streaming (chunk) reads section to Daft blob documentation
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Fix parallel blob reading example: use asyncio.to_thread for sync I/O
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Handle nullable blob in parallel reading example
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Fix broken anchor: blob#streaming-read -> blob#streaming-for-large-blobs
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