Bug triage results: 2026-07-13

[andygrove]

Triage pass over the open requires-triage queue, per the project Bug Triage Guide.

• Date: 2026-07-13
• Total issues processed: 7 (4 triaged, 3 skipped, 0 failed)
• Type counts: 0 bugs, 4 enhancements
• Priority counts applied: none (no bugs)
• Guide: docs/source/contributor-guide/bug_triage.md

Labels have already been applied and requires-triage removed from each issue listed under "Enhancements". A reviewer should spot-check the calls and close this issue when satisfied. To correct a label, edit the affected issue directly.

Enhancements

• Reduce allocations in approx_percentile QuantileSummaries merge and flush paths (#4874)
  • Area labels: area:expressions, area:aggregation
  • Rationale: reporter explicitly frames it as a follow-up performance improvement — results are already bit-identical to Spark, so this is an optimization request, not a defect.
• Codify Iceberg version compatibility (#4871)
  • Area labels: area:Iceberg, area:ci
  • Rationale: proposes a policy/CI matrix cleanup for Iceberg version support — no broken behavior, just a request to formalize a support window.
• chore: DataFusion 55.0.0 (#4865)
  • Area labels: none
  • Rationale: dependency-upgrade tracking issue for the DataFusion 55.0.0 bump — new work, not a defect.
• Drop support for JDK 11 (#4844)
  • Area labels: area:ci
  • Rationale: proposes dropping a supported JDK version to reduce the CI matrix — a scope/support change, not a bug.

Skipped — needs more info

• (Informational) AI driven performance analysis of scan implementation across plain Spark, Velox, and Comet (#4842)
  • Long informational analysis report (Comet vs plain Spark vs Gluten/Velox scan). It surveys many known/fixed issues and proposes a leverage-ordered remediation list, but is not itself a single bug report or feature request; the reviewer should decide whether to convert individual sections into separate issues, apply a documentation/discussion label, or close it.
• Bug triage results: 2026-07-06 (#4838)
  • Prior triage-summary meta-issue. Per this skill, summary issues are closed by the human reviewer once satisfied; leaving requires-triage in place so it stays visible to the reviewer.
• Bug triage results: 2026-06-29 (#4751)
  • Prior triage-summary meta-issue awaiting human review and closure; leaving requires-triage in place.