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RoaringBitmap

6 indexed repositories · View on GitHub

RoaringBitmap
A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others

Java · 3932 stars
roaring
Roaring bitmaps in Go (golang), used by InfluxDB, Bleve, DataDog

Go · 2940 stars
CRoaring
Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, Alibaba Tair, Redpand...

C · 1882 stars
roaring-rs
A better compressed bitset in Rust

Rust · 957 stars
RoaringFormatSpec
Specification of the compressed-bitmap Roaring format

Kaitai Struct · 191 stars
croaring-rs
Rust FFI wrapper for CRoaring

C · 174 stars

Beginner friendly Everything

Open All

Complete the Roaring64 C++ API Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

RoaringBitmap/CRoaring#846 · 1 comment · Opened Jul 14, 2026
`roaring::RoaringBitmap::full().statistics()` panics if overflow checks are enabled Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

RoaringBitmap/roaring-rs#357 · Opened Jun 15, 2026
`Bitmap.Clone()` data race on copy-on-write bitmaps (no writers) Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

RoaringBitmap/roaring#528 · Opened Jun 11, 2026
WASM SIMD128 backend Open

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

RoaringBitmap/CRoaring#801 · 1 comment · Opened Apr 19, 2026
RoaringBitmap as full persistent data structure Open

enhancement

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

RoaringBitmap/RoaringBitmap#826 · 8 comments · Opened Mar 1, 2026
FreeBSD package Open

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

RoaringBitmap/CRoaring#777 · 6 comments · 1 reaction · Opened Jan 8, 2026
Iterate over bit ranges Open

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

RoaringBitmap/roaring#491 · 2 comments · Opened Nov 5, 2025
[64 bit] what value does HighLowContainer provide? Open

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

RoaringBitmap/RoaringBitmap#792 · 10 comments · Opened Aug 12, 2025
Node48 childIndex Open

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

RoaringBitmap/RoaringBitmap#791 · 12 comments · Opened Aug 11, 2025
bulk additions/fast build Open

enhancement

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

RoaringBitmap/RoaringBitmap#785 · Opened Aug 3, 2025
non functional optimsations for Roaring64Bitmap Open

enhancement

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

RoaringBitmap/RoaringBitmap#776 · Opened Jul 25, 2025
Add add_offset to cpp headers Open

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

RoaringBitmap/CRoaring#717 · 1 comment · Opened Jun 14, 2025
Serialize to LSB bytes Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

RoaringBitmap/roaring-rs#324 · 2 reactions · Opened Jun 2, 2025
Roaring64NavigableMap.isEmpty in mutil-thread execute report java.lang.ArrayIndexOutOfBoundsException: 0 Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 48/100

RoaringBitmap/RoaringBitmap#773 · 11 comments · Opened Apr 3, 2025
`advance_to` not implemented for `roaring::treemap::Iter` Open

enhancement proposal

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

RoaringBitmap/roaring-rs#312 · 9 comments · Opened Mar 19, 2025
fast non empty of a and( bitmaps... ) ? Open

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

RoaringBitmap/RoaringBitmap#772 · 2 comments · Opened Mar 18, 2025
Investigate using __vectorcall under Windows Open

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

RoaringBitmap/CRoaring#689 · Opened Feb 10, 2025
Is it possible to be compatible with java based roaringbitmap? Open

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

RoaringBitmap/roaring-rs#310 · 6 comments · Opened Jan 20, 2025
add getReverseBatchIterator in RoaringBitmap Open

enhancement

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

RoaringBitmap/RoaringBitmap#767 · 3 comments · Opened Jan 20, 2025
Please update the wget statements in the README.md Open

Difficulty 1/5 Under an hour Newbie friendliness 50/100

RoaringBitmap/CRoaring#687 · 3 comments · Opened Jan 10, 2025
Could we get the memory size of Treemap that occupies Open

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

RoaringBitmap/croaring-rs#166 · 1 reaction · Opened Jan 10, 2025
Feature Request: optimized counter? Open

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

RoaringBitmap/roaring#463 · 5 comments · Opened Dec 4, 2024
Exposing the roaring64_iterator_t struct in the roaring64 header Open

RoaringBitmap/CRoaring#682 · 12 comments · 1 assignee · Opened Nov 11, 2024
Integrate an automated code formatter Open

gradle help wanted

Difficulty 4/5 3-5 days Newbie friendliness 28/100

RoaringBitmap/RoaringBitmap#757 · Opened Oct 31, 2024
Adding standard-conforming iterators for C++ Open

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

RoaringBitmap/CRoaring#669 · 4 comments · Opened Sep 30, 2024
Document a policy regarding memory allocation Open

documentation question

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

RoaringBitmap/CRoaring#638 · 15 comments · Opened Jun 26, 2024
RFE: Makefile or equivalent Open

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

RoaringBitmap/roaring#437 · 1 comment · Opened Jun 17, 2024
Roaring64 doesn't handle out of memory Open

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

RoaringBitmap/CRoaring#630 · 9 comments · Opened Jun 2, 2024
FeatureRequest: Rank with a range Open

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

RoaringBitmap/roaring#425 · 1 comment · Opened May 30, 2024
"Moving" parts of a RoaringBitmap Open

question

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

RoaringBitmap/roaring-rs#276 · 2 comments · Opened May 23, 2024
Is there any ops like gte in java RangeBitmap? Open

question

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

RoaringBitmap/roaring-rs#275 · 1 comment · Opened May 14, 2024
Feature request for 128bit for ipv6 usage. Open

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

RoaringBitmap/roaring#421 · 5 comments · 1 reaction · Opened Apr 17, 2024
AddOffset method for Roaring64Bitmap Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

RoaringBitmap/RoaringBitmap#709 · 1 comment · Opened Feb 9, 2024
Feature request: intersection, union, and difference with the tail of another bitmap Open

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

RoaringBitmap/CRoaring#591 · 4 comments · Opened Feb 9, 2024
Misc Missing Functionality for Roaring64 bitmaps Open

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

RoaringBitmap/CRoaring#549 · 9 comments · 3 reactions · Opened Jan 13, 2024
Mutable RangeBitmap appender Open

enhancement

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

RoaringBitmap/RoaringBitmap#688 · 5 comments · Opened Nov 22, 2023
OSGi Bundles support Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

RoaringBitmap/RoaringBitmap#687 · 1 comment · Opened Nov 22, 2023
Converting from bitmap/bitarray to roaring bitmap Open

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

RoaringBitmap/CRoaring#505 · 1 comment · Opened Sep 18, 2023
Interesting Go implementation Open

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

RoaringBitmap/roaring-rs#262 · 3 reactions · Opened Sep 16, 2023
RoaringBitmap add an efficient `findOffset` method for the index of one assigned value. Open

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

RoaringBitmap/RoaringBitmap#627 · 7 comments · Opened Jun 6, 2023
Get element by index Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

RoaringBitmap/roaring-rs#252 · 2 comments · 1 reaction · Opened Apr 24, 2023
Debug visualizer for Visual Studio or lldb Open

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

RoaringBitmap/CRoaring#459 · 3 comments · Opened Mar 31, 2023
Implement the AVX-512 versions of the following functions Open

help wanted

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

RoaringBitmap/CRoaring#454 · 13 comments · 5 reactions · Opened Mar 27, 2023
Implement Bit-sliced index for CRoaring Open

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

RoaringBitmap/CRoaring#435 · 7 comments · Opened Feb 11, 2023
External-memory roaring data structure Open

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

RoaringBitmap/roaring#378 · 2 comments · 1 reaction · Opened Dec 29, 2022
Optimization: rkyv Open

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

RoaringBitmap/roaring-rs#251 · 1 comment · 7 reactions · Opened Dec 28, 2022
Fast/convenient masking operations Open

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

RoaringBitmap/CRoaring#419 · 2 comments · Opened Dec 25, 2022
Add getContainerCount() method Open

enhancement help wanted

Difficulty 3/5 1-2 days Newbie friendliness 42/100

RoaringBitmap/RoaringBitmap#611 · 4 comments · Opened Dec 25, 2022
Support reading records in roaringbitmap from iteratively serialized persistent files Open

enhancement

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

RoaringBitmap/RoaringBitmap#604 · 2 comments · Opened Dec 12, 2022
fastunion vs |= in a loop Open

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

RoaringBitmap/CRoaring#417 · 1 comment · Opened Dec 8, 2022

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