Issues

• Remove the Parquet writer's copy of Arrow's overflow helpers for Arrow 26

  enhancement
  facebookincubator/velox#20309 · Filter by author kou opened on Nov 12, 2026

• Parquet reader crashes on a nullable struct with mixed required/optional fields in DATA_PAGE_V2 pages

  bugtriage
  facebookincubator/velox#20306 · Filter by author rdtr opened on Nov 12, 2026
  1

• MergeJoin can finish before buffered final-key matches are returned

  facebookincubator/velox#20298 · Filter by author perfloop-agent opened on Nov 11, 2026

• Timestamp::toNanos() throws for in-range timestamps near the int64 nanosecond minimum

  bugtriage
  facebookincubator/velox#20274 · Filter by author karthikeyann opened on Nov 11, 2026

• [cuDF] The pushed-down filter AST is rebuilt for every preloaded split

  facebookincubator/velox#20238 · Filter by author galipremsagar opened on Nov 9, 2026

• dwio: testDoubleFilter fills a missing floating-point bound with a finite limit

  facebookincubator/velox#20229 · Filter by author galipremsagar opened on Nov 9, 2026

• [Spark] upper and initcap do not expand characters the way Spark does

  facebookincubator/velox#20208 · Filter by author tmjoris opened on Nov 9, 2026

• [Spark] lpad and rpad fail on an empty pad string

  facebookincubator/velox#20207 · Filter by author tmjoris opened on Nov 9, 2026

• Let readers decide which columns support dynamic filter pushdown

  enhancement
  facebookincubator/velox#20201 · Filter by author PingLiuPing opened on Nov 9, 2026

• Abandon partial aggregation when its memory grows with the input

  performance
  facebookincubator/velox#20187 · Filter by author mbasmanova opened on Nov 8, 2026
  2

• Spark: arrays_overlap returns false for -0.0 and 0.0, Spark returns true since 4.0.5 / 4.1.4 / 4.2.0

  bugtriage
  facebookincubator/velox#20179 · Filter by author rdtr opened on Nov 7, 2026

• [cuDF] Prune Iceberg row groups on the host like the Hive data source

  facebookincubator/velox#20173 · Filter by author galipremsagar opened on Nov 7, 2026

• cuDF failure due to integer cast yielding int64

  bugtriage
  facebookincubator/velox#20158 · Filter by author JohnZed opened on Nov 6, 2026
  1

• [Spark] Add HALF_EVEN rounding with bround

  facebookincubator/velox#20146 · Filter by author minni31 opened on Nov 6, 2026

• Strengthening Spark Compatibility in Velox with Automated Expression Fuzzing and Validation

  enhancement
  facebookincubator/velox#20135 · Filter by author rui-mo opened on Nov 5, 2026
  

• [cuDF] Story: support Hive filter pushdown in the GPU table scan

  facebookincubator/velox#20130 · Filter by author devavret opened on Nov 5, 2026
  2

• Exchange response handlers keep sources and query memory pools alive after the Task is deleted

  facebookincubator/velox#20083 · Filter by author mbasmanova opened on Nov 4, 2026
  2

• Spark functions with a fixed mode: try_* and expressions Spark always builds with failOnError set

  enhancement
  facebookincubator/velox#20057 · Filter by author rdtr opened on Nov 3, 2026

• [Proposal] Optimize prefix ROLLUP via hierarchical partial aggregation

  enhancement
  facebookincubator/velox#20047 · Filter by author hhr293 opened on Nov 3, 2026
  12

• cudf: parquet.reader.timestamp-type at TIMESTAMP_DAYS yields seconds in a day column

  facebookincubator/velox#20045 · Filter by author galipremsagar opened on Nov 3, 2026
  1

• Define the alignment and padding contract for vector buffers

  facebookincubator/velox#20033 · Filter by author zhulipeng opened on Nov 3, 2026
  9

• UcxExchangeTest Intermittent OOM in CI

  bugtriage
  facebookincubator/velox#20029 · Filter by author simoneves opened on Nov 3, 2026

• [cuDF] Support projecting a DECIMAL or TIMESTAMP constant on the GPU

  enhancement
  facebookincubator/velox#20008 · Filter by author simoneves opened on Nov 2, 2026

• Distinguish API misuse from invalid input data in Velox errors

  facebookincubator/velox#19996 · Filter by author mbasmanova opened on Nov 2, 2026
  7

• [SPARK] Close remaining SPARK_ISO gaps in to_timestamp_ntz

  bugtriage
  facebookincubator/velox#19982 · Filter by author Mariamalmesfer opened on Nov 1, 2026