Issues

• [Data] Support projection, filter, and limit pushdown for read_hive table reads

  community-backlogdataperformance
  ray-project/ray#66843 · Filter by author jiangxt2 opened on Oct 8, 2026

• [Data] Make null ordering consistent between Arrow/Pandas and Polars sort

  bugcommunity-backlogdatastabilitytriage
  ray-project/ray#66841 · Filter by author viiccwen opened on Oct 8, 2026
  1

• [Data] Support optional query-schema inference in read_hive

  community-backlogdatausability
  ray-project/ray#66840 · Filter by author jiangxt2 opened on Oct 8, 2026
  2

• [data] Runtime Bloom-filter pushdown to Join

  dataenhancementP2
  ray-project/ray#66839 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Broadcast hash join

  dataenhancementP1
  ray-project/ray#66838 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Plan-level common subtree reuse (CSE on the logical DAG)

  dataenhancementP1
  ray-project/ray#66837 · Filter by author owenowenisme opened on Oct 8, 2026
  1

  

• [data] Eager aggregation: push partial aggregates below joins

  dataenhancementP1
  ray-project/ray#66836 · Filter by author owenowenisme opened on Oct 8, 2026
  1

  

• [data] Evaluate residual (non-equi) join predicates at probe time

  dataenhancementP1
  ray-project/ray#66835 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Join condition slot + automatic equi-join key extraction

  dataenhancementP0
  ray-project/ray#66834 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Derive required columns through Join in ProjectionPushdown

  dataenhancementP0
  ray-project/ray#66833 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Predicate pushdown through joins: split conjuncts, fix fusion ordering, derive one-sided OR weakenings

  dataenhancementP0
  ray-project/ray#66832 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [data] Push Limit through Sort (Top-N execution)

  dataenhancementP0
  ray-project/ray#66831 · Filter by author owenowenisme opened on Oct 8, 2026
  1

  

• [data] Track output partitioning as a physical property and eliminate redundant shuffles

  dataenhancementP0
  ray-project/ray#66830 · Filter by author owenowenisme opened on Oct 8, 2026
  1

  

• [data] Umbrella: query optimizer gaps identified by TPC-H benchmarking

  dataenhancement
  ray-project/ray#66829 · Filter by author owenowenisme opened on Oct 8, 2026
  

• [Serve] gRPC servers keep SO_REUSEPORT on with enable_so_reuseport=False, so direct ingress ports can be shared

  bugservestabilitytriage
  ray-project/ray#66815 · Filter by author xyuzh opened on Oct 7, 2026

• [Core] Don't prestart one worker per CPU when num_cpus is autodetected

  community-backlog
  ray-project/ray#66804 · Filter by author ctcjab opened on Oct 7, 2026
  1

• [RLlib] MultiAgentEpisode marks the episode terminated when a new agent joins on the step the last registered agent terminates (despite __all__=False)

  bugcommunity-backlogrllibstabilitytriage
  Bug

  ray-project/ray#66781 · Filter by author WiemKhlifi opened on Oct 6, 2026
  1

• [Data] Integer overflow produces incorrect sum and mean aggregations

  community-backlogdatastability
  ray-project/ray#66779 · Filter by author raun6k opened on Oct 6, 2026

• [Core] Cluster scheduling degrades under specific load

  community-backlogcoreneeds-repro-scriptP2performance
  ray-project/ray#66775 · Filter by author leviska opened on Oct 6, 2026
  2

• [Train] STRICT_SPREAD runs can wait forever when the autoscaler packs coordinator bundles onto one node

  bugtrain
  ray-project/ray#66766 · Filter by author justinvyu opened on Oct 6, 2026

• [Serve] CapacityQueueRouter loses capacity tokens for concurrent child handle calls

  community-backlogservestability
  ray-project/ray#66758 · Filter by author hsusul opened on Oct 5, 2026

• [Data] Checkpoint Guard for Iceberg Checkpointing

  community-backlogdataenhancementstabilitytriageusability
  ray-project/ray#66730 · Filter by author smortime opened on Oct 5, 2026

• [Data] Support task memory metrics on macOS

  community-backlogdatadocsenhancementperformancetriageusability
  ray-project/ray#66729 · Filter by author Jo-Leo-35 opened on Oct 5, 2026

• [Core] GCS main thread wastes time copying redundant cluster resource data

  community-backlogcoreperformance
  ray-project/ray#66718 · Filter by author dancingactor opened on Oct 5, 2026
  1

• [Core] Ray Client: specific-server child killed in gRPC atfork handler -- "Starting Ray client server failed", empty .err, 40s to surface

  community-backlogcoreneeds-repro-scriptquestionstability
  ray-project/ray#66662 · Filter by author albertlab0 opened on Oct 2, 2026