Issues

• A whole-window ingestion build at a nonzero phase is anchored at its reader, not the epoch

  bugoptimizerwindow
  ProjectASAP/ASAPPlanner#828 · Filter by author zzylol opened on Oct 21, 2026

• A distinct-count UnivMon shared by readers with different failure probabilities misses the tighter-error reader

  accuracybugerror-estimation
  ProjectASAP/ASAPPlanner#813 · Filter by author zzylol opened on Oct 21, 2026

• A KLL shared by readers with different failure probabilities misses the tighter-error reader

  accuracybugerror-estimation
  ProjectASAP/ASAPPlanner#812 · Filter by author zzylol opened on Oct 21, 2026

• Count Sketch depth is about 1.8x too deep: its collision model assumes UnivMon hash slicing

  accuracybugerror-estimation
  ProjectASAP/ASAPPlanner#811 · Filter by author zzylol opened on Oct 21, 2026

• A DDSketch quantile's relative bound fails when the interpolated neighbours straddle zero

  accuracybugerror-estimation
  ProjectASAP/ASAPPlanner#807 · Filter by author zzylol opened on Oct 21, 2026

• Sizing allocates far larger sketches than the workload needs

  accuracyenhancementresource
  ProjectASAP/ASAPPlanner#798 · Filter by author zzylol opened on Oct 21, 2026

• Nested topk/bottomk forms fail to plan or execute

  bugpromql
  ProjectASAP/ASAPPlanner#796 · Filter by author zzylol opened on Oct 21, 2026

• A partial measured cost table can still mis-rank plans: calibrate per operator kind

  cost-modelenhancement
  ProjectASAP/ASAPPlanner#791 · Filter by author zzylol opened on Oct 21, 2026

• UnivMon accuracy rule: use the paper guarantee (1±ε, failure probability 0.3)

  accuracyenhancementerror-estimation
  ProjectASAP/ASAPPlanner#788 · Filter by author zzylol opened on Oct 20, 2026

• Move the asap_sketchlib pin to a released sketchlib main

  enhancementresource
  ProjectASAP/ASAPPlanner#785 · Filter by author zzylol opened on Oct 20, 2026

• Stage 1 to Stage 3 silently plans a PromQL root whose series-identity rewrite fails

  bugpromql
  ProjectASAP/ASAPPlanner#784 · Filter by author zzylol opened on Oct 20, 2026

• Physical operator library performance: columnar, batched, parallel and efficient basic operations

  enhancementresource
  ProjectASAP/ASAPPlanner#778 · Filter by author zzylol opened on Oct 20, 2026

• Flat-buffer state columns for fixed-size sketches need slice kernels in asap_sketchlib

  enhancementresource
  ProjectASAP/ASAPPlanner#764 · Filter by author zzylol opened on Oct 19, 2026

• Stage 3 under-predicts CPU ~740×: measured costs price only sketch kernels, not scans, per-row work or merges

  bugcost-modelresource
  ProjectASAP/ASAPPlanner#761 · Filter by author zzylol opened on Oct 19, 2026

• Stage 3 almost never selects query-time results kept across evaluations (Example 4 B3 costs 8,884.5/s vs 2.1/s)

  bugcost-modelresource
  ProjectASAP/ASAPPlanner#754 · Filter by author zzylol opened on Oct 18, 2026

• SQL per-entity fold over an estimate has no guarantee: SELECT src, max(p) … GROUP BY src over a DDSketch p

  accuracyenhancementnested queriessql
  ProjectASAP/ASAPPlanner#751 · Filter by author zzylol opened on Oct 18, 2026

• Family-capability table: infer "has heaps" from an explicit column, not from any Approximate readout

  accuracyCSEenhancement
  ProjectASAP/ASAPPlanner#750 · Filter by author zzylol opened on Oct 18, 2026

• Counter window ignores the @ anchor (and its offset): rate(m[5m] @ 300) reads the window ending at the evaluation time

  bugpromqlwindow
  ProjectASAP/ASAPPlanner#748 · Filter by author zzylol opened on Oct 18, 2026

• PhysicalASAPDAG::validate accepts an unstored ingestion-time output read at query time

  bindingbug
  ProjectASAP/ASAPPlanner#747 · Filter by author zzylol opened on Oct 18, 2026

• Accuracy: guarantees for comparisons and top-k bands over estimates (#669 follow-up)

  accuracyenhancementerror-estimation
  ProjectASAP/ASAPPlanner#743 · Filter by author zzylol opened on Oct 18, 2026

• Grouped CASE over a frequency-L2 statistic is sized as absolute error; the ungrouped one as relative

  accuracysql
  ProjectASAP/ASAPPlanner#739 · Filter by author zzylol opened on Oct 17, 2026

• Capabilities lost with the legacy replacement search: maintenance-time exact operations, extension intents, nested folds, rate-maintained summaries and guards

  accuracyenhancementextensibilityoptimizerreplacement-strategy
  ProjectASAP/ASAPPlanner#735 · Filter by author zzylol opened on Oct 16, 2026

• Plan selection: price storage I/O, handoffs and cache, from deployment evidence with provenance

  bindingcost-modelenhancement
  ProjectASAP/ASAPPlanner#733 · Filter by author zzylol opened on Oct 16, 2026

• Pass 2: shared window grids (group-wide panes and long-window segments)

  CSEenhancementoptimizerwindow
  ProjectASAP/ASAPPlanner#731 · Filter by author zzylol opened on Oct 16, 2026

• Pass 1 offers CountSketch for a count, but the executor cannot evaluate a CountSketch total

  accuracybugreplacement-strategy
  ProjectASAP/ASAPPlanner#727 · Filter by author zzylol opened on Oct 16, 2026