RoaringBitmap / RoaringBitmap/CRoaring

Port "OrderedWriter" from Java for faster RoaringBitmap creation and modification

Open
#151 2 comments 2 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

help wanted performance
Dominant language
C
Stars
1.9k
Forks
334
Avg merge
2d 5h
Merged PRs (30d)
17

Description

Hi there,

RoaringBitmap 0.7.13 for Java has an "OrderedWriter" class which accumulates all values within the same highbits from a "int stream", so it touches each container only once. I didn't find anything like this on CRoaring implementation.

Is it something that is already in progress in CRoaring and can I implement it on my own and send a PR?

Thanks so much!

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by comparing Java RoaringBitmap 0.7.13's OrderedWriter with the existing CRoaring implementation. Trace how values from an int stream are accumulated by highbits and how containers are created or modified. Done means CRoaring has an equivalent OrderedWriter capability that touches each container only once and is suitable for a pull request.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, java
Domain
data, performance
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.