apache/parquet-format

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Apache Parquet Format

Stars: 2.6k
Forks: 508
Open beginner issues: 2
Indexed issues: 57
Avg merge: 3d 15h
Merged PRs (30d): 5

Dominant language: Thrift
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

Introduce modular footer Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#622 · Opened Sep 21, 2026
Track unknown logical type compatibility across Parquet implementations Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

apache/parquet-format#599 · 3 comments · Opened Jul 15, 2026
Discussion around storing SUM as a optional metadata field. Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#596 · 1 comment · Opened Jul 10, 2026
Make `path_in_schema` optional Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 45/100

apache/parquet-format#563 · 8 comments · 5 reactions · Opened Apr 8, 2026
How to configure/tweak Parquet for storing and retrieving vector embeddings? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#553 · 1 comment · Opened Feb 16, 2026
A "personal data" boolean in field metadata Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#551 · 2 comments · Opened Jan 23, 2026
Bloom filter size table does not match implementations Open

Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

apache/parquet-format#547 · 12 comments · Opened Jan 14, 2026
Introduce FSST Support for Parquet Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#531 · 2 comments · 1 reaction · Opened Nov 21, 2025
Add FlatBuffers footer to speed up metadata parsing Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#530 · 3 comments · Opened Oct 20, 2025
Add IP address logical type Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/parquet-format#521 · 1 comment · Opened Sep 3, 2025
Variant shredding spec ambiguously refers to both SQL NULL and Variant null as "null" Open

Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

apache/parquet-format#519 · 4 comments · Opened Aug 25, 2025
Add SortingColumn on a file level Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

apache/parquet-format#501 · 3 comments · Opened Jun 17, 2025
N-gram Bloom Filter Support Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#490 · 3 comments · Opened Mar 31, 2025
Token Bloom filter Support Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#489 · 6 comments · Opened Mar 31, 2025
Document the behavior of Nested ColumnChunk statistics Open

Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-format#476 · 3 comments · Opened Jan 7, 2025
Add new optional type parameters Offset to TIMESTAMP Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#458 · 2 comments · Opened Oct 18, 2024
Clarify use of RowGroup.ordinal field Open

Type: enhancement

apache/parquet-format#452 · 1 assignee · Opened Sep 23, 2024
Column/field description Open

Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#447 · 16 comments · Opened Jul 29, 2024
Parquet compatibility / integration testing Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#441 · 15 comments · Opened Jun 26, 2024
[Format] Specify VARIABLE_SIZE_LIST Logical type Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#437 · 2 comments · Opened Jun 24, 2024
Design a general extension mechanism for Parquet Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/parquet-format#436 · 1 reaction · Opened Jun 6, 2024
parquet.thrift uses both row / record to refer to the same concept Open

Priority: Major Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 25/100

apache/parquet-format#434 · Opened May 31, 2024
Remove authors from the POM Open

Priority: Major Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 15/100

apache/parquet-format#432 · Opened May 19, 2024
Bump to Apache parent POM 32 Open

Priority: Major Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

apache/parquet-format#431 · Opened May 19, 2024
[Format] Specify FIXED_SIZE_LIST Logical type Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#430 · Opened May 15, 2024
The Parquet Spec doesn't specify whether multiple columns are allowed to have the same name. Open

Priority: Minor Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

apache/parquet-format#421 · 2 comments · Opened Sep 8, 2023
parquet-format and parquet-format-structures defines Util with inconsitent methods provided Open

Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-format#420 · 2 comments · Opened Jun 23, 2023
Adding Compression for BloomFilter Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#408 · 3 comments · Opened Mar 13, 2023
BloomFilter and float point is ambiguous Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#407 · 5 comments · Opened Mar 13, 2023
[Format] Encoding spec incorrect for dictionary fallback Open

Priority: Critical Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

apache/parquet-format#404 · 4 comments · Opened Jan 3, 2023
Parquet Filter predicate storing nested string causing OOM's Open

Priority: Critical Type: bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

apache/parquet-format#403 · 3 comments · Opened Dec 29, 2022
Support gorilla encoding for float numbers Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#401 · 2 comments · Opened Dec 4, 2022
support saving meta and data seperately Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#400 · Opened Oct 27, 2022
Why the logic of ParquetFileWrite is diff from the parquet format Open

Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-format#399 · 1 comment · Opened Jun 25, 2022
Support Int8 and Int16 as basic type Open

Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-format#397 · 2 comments · Opened Mar 1, 2022
Formatting is broken for description of BIT_PACKED Open

Priority: Minor Type: enhancement

Difficulty 1/5 Under an hour Newbie friendliness 55/100

apache/parquet-format#395 · 1 comment · Opened Sep 5, 2021
Deprecate RowGroup.file_offset Open

Priority: Major Type: bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-format#394 · 5 comments · Opened Aug 30, 2021
The example in delta-encoding seems incorrect Open

Priority: Minor Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

apache/parquet-format#393 · Opened Apr 17, 2021
Add documentation about RLE-bitpack hybrid encoder Open

Priority: Minor Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-format#287 · Opened Apr 10, 2021
Consider adding BloomFilterHeader to ColumnMetaData Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

apache/parquet-format#285 · Opened Feb 16, 2021
Build and test Apache Parquet on ARM64 CPU architecture Open

Priority: Minor Type: test

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-format#385 · 7 comments · Opened Feb 16, 2021
Define core features / compliance level Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#384 · 10 comments · Opened Dec 10, 2020
[Format] Clarify encodings and data page guidance. Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 15/100

apache/parquet-format#383 · Opened Oct 22, 2020
Register a MIME type for the Parquet format. Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

apache/parquet-format#381 · 15 comments · Opened Jul 28, 2020
format: Update merge script Open

Priority: Major Type: enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 20/100

apache/parquet-format#379 · Opened Jan 28, 2020
Clarify encoding schemes for boolean types Open

Priority: Major Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

apache/parquet-format#347 · 3 comments · Opened Mar 17, 2018
Support for GDPR erase requirements Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 18/100

apache/parquet-format#341 · 4 comments · Opened Nov 6, 2017
Check Makefile in Travis build Open

Priority: Major Type: bug

Difficulty 2/5 1-3 hours Newbie friendliness 20/100

apache/parquet-format#339 · Opened Oct 12, 2017
Store `dictionary entries` of parquet columns that will be used for joins Open

Priority: Major Type: enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

apache/parquet-format#325 · Opened Apr 26, 2017
add logical type timestamp with timezone (per SQL) Open

Priority: Minor Type: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

apache/parquet-format#322 · 1 comment · Opened Mar 6, 2017

apache/parquet-format

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