GH-602: Move ALP encoding specification to AlpEncoding.md - #608
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Move the ALP algorithm description (everything from the Overview section onward) out of Encodings.md into a new AlpEncoding.md, keeping the introductory description and a link in Encodings.md. The content is moved verbatim; the only edit is updating the RLE/Bit-Packing Hybrid link to point back to Encodings.md. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
alamb
marked this pull request as ready for review
August 13, 2026 16:55
alamb
changed the title
AlpEncoding.md
prtkgaur
approved these changes
Aug 18, 2026
| readings) while remaining fully lossless. Each value is encoded independently, | ||
| enabling random access to individual values and parallel encoding/decoding. | ||
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| #### Overview |
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The move looks right.
This leaves the basic description in the Encodings.md file and moves the details (encoding, decoding, layout) to the ALP specific file.
divjotarora
approved these changes
Aug 18, 2026
RussellSpitzer
approved these changes
Aug 18, 2026
wgtmac
approved these changes
Aug 18, 2026
etseidl
approved these changes
Aug 18, 2026
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Since this is just a mechanical move, and it has several approvals already, I will merge it in Thank you @prtkgaur @divjotarora @RussellSpitzer @wgtmac and @etseidl 🙏 |
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Rationale for this change
As suggested by @pitrou in #557 (comment), the ALP algorithm description is long enough that it deserves its own file, following the pattern of other detailed specifications.
What changes are included in this PR?
This PR is a straight move of the spec text, with no changes to the content:
Overviewsection onward of the ALP section ofEncodings.mdinto a new file,AlpEncoding.md. Rendered https://github.com/alamb/parquet-format/blob/gh-602-alp-separate-file/AlpEncoding.mdEncodings.md, followed by a link to the new fileThe moved text is verbatim except:
###-->#) to reflect standalone docDo these changes have api implications?
No, this is a documentation reorganization only.
parquet.thriftalready refers readers toEncodings.md, which now links onward to the new file.🤖 Generated with claude code, reviewed by me (@alamb)