feat: add custom Avro OCF reader for manifest parsing with filtered decoding#281
Merged
JingsongLi merged 1 commit intoapache:mainfrom Apr 25, 2026
Merged
Conversation
…ecoding Replace apache-avro's read path (Value intermediate representation) with a zero-copy custom decoder that reads Avro binary directly into target structs. Key optimizations: - Custom AvroCursor for zero-copy Avro binary primitive decoding - OCF parser with snappy/deflate/zstd decompression support - Writer schema parsing with field index mapping for compatibility - Two-pass filtered ManifestEntry decoding: lightweight fields first, skip expensive DataFileMeta for filtered-out entries - SharedSchemaCache for cross-task schema reuse - Zero-copy entry consumption (into_identifier, into_parts) - Parallel base+delta manifest list reads via futures::try_join! - Remove redundant exists() checks before file reads
JingsongLi
force-pushed
the
avro_super_fast
branch
from
98e6cc2 to
08b4576
Compare
| source: None, | ||
| }); | ||
| } | ||
| }; |
Contributor
There was a problem hiding this comment.
This doesn't handle deflate. I think we can support later, not blocker.
Contributor
|
+1 |
XiaoHongbo-Hope
approved these changes
Apr 24, 2026
luoyuxia
approved these changes
Apr 24, 2026
Contributor
luoyuxia
left a comment
luoyuxia
left a comment
There was a problem hiding this comment.
Have a quick review for this pr. Not found any blocking problem. A nice idea to optimize. LGTM!
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Purpose
Replace apache-avro's read path (Value intermediate representation) with a zero-copy custom decoder that reads Avro binary directly into target structs. Key optimizations:
Benchmark for TableScan:
Brief change log
Tests
API and Format
Documentation