Issues

• DDSketch: optional maxBins cap on the bucket stores, as in sketchlib-go (not now)

  ProjectASAP/asap_sketchlib#234 · Filter by author GordonYuanyc opened on Oct 18, 2026

• DDSketch: small alpha makes the dense store unbounded; try_add recomputes indexable bounds per sample

  ProjectASAP/asap_sketchlib#210 · Filter by author zzylol opened on Oct 6, 2026
  

• Serialization: ASAPv1 as the only format (tracking)

  ProjectASAP/asap_sketchlib#179 · Filter by author GordonYuanyc opened on Oct 6, 2026

• pbt: count_sketch_merge_matches_streaming_the_concatenation fails on cancellation — tolerance scales with the result, not the summands

  ProjectASAP/asap_sketchlib#162 · Filter by author GordonYuanyc opened on Sep 25, 2026

• classic_estimate: replace per-register powi with a constant table (2.70x, bit-identical)

  ProjectASAP/asap_sketchlib#143 · Filter by author GordonYuanyc opened on Sep 14, 2026

• MicroscopeSketch is !Sync because Vector3D::fast_insert takes F: Fn

  ProjectASAP/asap_sketchlib#142 · Filter by author GordonYuanyc opened on Sep 14, 2026

• Count Sketch has no CountSketchCounter impl for f64

  enhancement
  ProjectASAP/asap_sketchlib#133 · Filter by author GordonYuanyc opened on Aug 31, 2026

• KLL: custom lt instead of total_cmp

  enhancement
  ProjectASAP/asap_sketchlib#92 · Filter by author GordonYuanyc opened on Aug 11, 2026

• KLL fixed-size sorting

  enhancement
  ProjectASAP/asap_sketchlib#91 · Filter by author GordonYuanyc opened on Aug 11, 2026

• KLL compactor merge: safe or unsafe

  question
  ProjectASAP/asap_sketchlib#90 · Filter by author GordonYuanyc opened on Aug 11, 2026

• KLL compactors merge operation is not in-place

  enhancement
  ProjectASAP/asap_sketchlib#89 · Filter by author GordonYuanyc opened on Aug 11, 2026

• KLL levels[] is not completely static

  enhancement
  ProjectASAP/asap_sketchlib#87 · Filter by author GordonYuanyc opened on Aug 11, 2026

• UniformSampling is positionally biased: early stream positions survive at 33%, late at 68%

  ProjectASAP/asap_sketchlib#83 · Filter by author GordonYuanyc opened on Aug 4, 2026

• DDSketch: negative/zero value tracking (deferred design question, split from #70)

  ProjectASAP/asap_sketchlib#73 · Filter by author zzylol opened on Jul 17, 2026

• DDSketch: representative-formula accuracy bug, release-mode merge-check gap, positive-only value handling (vs DataDog reference; companion to sketchlib-go#72)

  ProjectASAP/asap_sketchlib#70 · Filter by author zzylol opened on Jul 16, 2026
  5

• Add subtract to CountMin/Count (CMS/CountSketch), mirroring existing merge

  ProjectASAP/asap_sketchlib#69 · Filter by author milindsrivastava1997 opened on Jul 13, 2026

• asap_sketchlib build fails because of missing protoc compiler

  ProjectASAP/asap_sketchlib#34 · Filter by author milindsrivastava1997 opened on Apr 8, 2026
  1

• Add bulk_estimate API for CMS (and maybe other sketches possible)

  enhancement
  ProjectASAP/asap_sketchlib#27 · Filter by author Selvomega opened on Mar 12, 2026

• [Discussion] We should add a test suite

  enhancement
  ProjectASAP/asap_sketchlib#24 · Filter by author milindsrivastava1997 opened on Mar 9, 2026
  4

• Refactor (fold) the documentation

  ProjectASAP/asap_sketchlib#22 · Filter by author GordonYuanyc opened on Mar 6, 2026
  1

• Row Insertion Pattern for Batch Insertion

  ProjectASAP/asap_sketchlib#20 · Filter by author GordonYuanyc opened on Mar 5, 2026
  

• Refactor: fold_cms and fold_cs unified with common structure

  enhancement
  ProjectASAP/asap_sketchlib#17 · Filter by author GordonYuanyc opened on Mar 2, 2026
  

• EHUnivMonOptimized Extended to General EHOptimized

  enhancement
  ProjectASAP/asap_sketchlib#14 · Filter by author GordonYuanyc opened on Feb 26, 2026
  

• Fold CMS/CS to regular CMS/CS and possible merge-ability

  ProjectASAP/asap_sketchlib#8 · Filter by author GordonYuanyc opened on Feb 24, 2026
  

• Code Reorg for EH UnivMon optimization

  ProjectASAP/asap_sketchlib#5 · Filter by author GordonYuanyc opened on Feb 19, 2026