Issues

• Vortex can't combine two files it has previous written, when one of the blocks in the rewritten file contains a sliced sparse array of UUIDs alongside a dense one.

  bug
  vortex-data/vortex#10417 · Filter by author umanwizard opened on Oct 9, 2026

• Fuzzing Crash: VortexError in compress_roundtrip

  bugfuzzer
  vortex-data/vortex#10404 · Filter by author github-actions opened on Oct 9, 2026
  3

• Arrow string-view imports pin whole Parquet pages, so the writer never coalesces string columns

  bug
  vortex-data/vortex#10403 · Filter by author joseph-isaacs opened on Oct 8, 2026

• DictStreamState::encode loops forever on a value that does not fit an empty dictionary

  bug
  vortex-data/vortex#10397 · Filter by author grevend opened on Oct 8, 2026
  2

• BitPacked compare and between are 3x to 7x slower on baseline x86-64 than CodSpeed shows

  bug
  vortex-data/vortex#10396 · Filter by author mightsleep opened on Oct 8, 2026

• Add benchmarking for writing and compacting vortex files

  vortex-data/vortex#10386 · Filter by author joseph-isaacs opened on Oct 8, 2026

• Dispatch append_to_builder through append-parent kernels instead of hard-coding fast paths in Dict

  feature
  vortex-data/vortex#10382 · Filter by author joseph-isaacs opened on Oct 7, 2026

• Clarify error semantics for validity queries

  vortex-data/vortex#10313 · Filter by author connortsui20 opened on Oct 5, 2026

• Tracking Issue: Stabilize PatchedArray

  tracking-issue
  vortex-data/vortex#10311 · Filter by author mhk197 opened on Oct 5, 2026

• duckdb: support struct extract column indices

  changelog/featureext/duckdbgood first issue
  vortex-data/vortex#10297 · Filter by author myrrc opened on Oct 5, 2026
  5

• DataFusion arithmetic is wrapping, but gets pushed into Vortex as checked

  vortex-data/vortex#10289 · Filter by author gatesn opened on Oct 4, 2026

• Bloom filter keys floats by raw bytes: -0.0 and +0.0 land in different buckets

  vortex-data/vortex#10276 · Filter by author jackylee-ch opened on Oct 3, 2026

• Affine integer encoding: per-chunk reference, common divisor (GCD) and fixed-point slope

  Feature

  vortex-data/vortex#10273 · Filter by author joseph-isaacs opened on Oct 3, 2026

• Implement partial aggregation pushdown support from DataFusion into vortex.

  ext/datafusionfeature
  vortex-data/vortex#10221 · Filter by author myrrc opened on Oct 2, 2026
  

• Tracking Issue: Retire the legacy statistics APIs

  tracking-issue
  vortex-data/vortex#10177 · Filter by author connortsui20 opened on Oct 1, 2026

• duckdb: struct_extract with equality filter reads the whole struct into memory

  ext/duckdb
  Bug

  vortex-data/vortex#10176 · Filter by author myrrc opened on Oct 1, 2026
  

• Epic: Refactor Statistics

  epic
  vortex-data/vortex#10175 · Filter by author connortsui20 opened on Oct 1, 2026
  1

  

• Blocked FoR: Try FoR/BitPacked unified cast kernel

  vortex-data/vortex#10173 · Filter by author mhk197 opened on Oct 1, 2026

• Epic: Labelled metrics and observability data support

  epic
  vortex-data/vortex#10172 · Filter by author joseph-isaacs opened on Oct 1, 2026

• Epic: Time series data support

  epic
  vortex-data/vortex#10171 · Filter by author joseph-isaacs opened on Sep 30, 2026
  1

• Tracking Issue: Implement Blocked BitPacked Encoding

  tracking-issue
  vortex-data/vortex#10167 · Filter by author mhk197 opened on Sep 30, 2026

• Blocked FoR: Implement blocked encode/decode CUDA kernels

  vortex-data/vortex#10160 · Filter by author mhk197 opened on Sep 30, 2026

• Blocked FoR: Implement compute kernels for multiple reference FoR

  vortex-data/vortex#10159 · Filter by author mhk197 opened on Sep 30, 2026

• Tracking Issue: Blocked Frame of Reference (FoR) Encoding

  tracking-issue
  vortex-data/vortex#10127 · Filter by author mhk197 opened on Sep 29, 2026

• perf bug: repeated decompression of runend ends

  bug
  vortex-data/vortex#10126 · Filter by author tpoterba opened on Sep 29, 2026