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@dependabot dependabot bot commented on behalf of github Dec 22, 2025

Bumps ray from 2.44.0 to 2.53.0.

Release notes

Sourced from ray's releases.

Ray-2.53.0

Highlights

  • Ray plans to drop support for Pydantic V1 starting version 2.56.0. Please see this RFC for details.
  • Ray Data now has support for bounded reading from Kafka and improved Iceberg support.

Ray Data

🎉 New Features

  • Autoscaling: New utilization-based cluster autoscaler for Ray Data workloads (#59353, #59362, #59366). To use this new autoscaler set RAY_DATA_CLUSTER_AUTOSCALER=V2.
  • Kafka Datasource: Add Kafka as a native datasource for data ingestion (#58592)
  • Dataset summary API: Add Dataset.summary() API for quick dataset inspection (#58862)
  • Iceberg support: Add Iceberg schema evolution, upsert, and overwrite support (#59210, #59335)
  • Graceful error handling: Add should_continue_on_error for graceful error handling in batch inference (#59212)
  • Datetime compute expressions: Add datetime compute expressions support (#58740)
  • Grouped with_column expressions: Enable expressions for grouped with_column in Ray Data (#58231)
  • Parallelized collation: Parallelize DefaultCollateFn, arrow_batch_to_tensors (#58821)

💫 Enhancements

  • Optimized Autoscaler Step Size: Optimize autoscaler to support configurable step size for actor pool scaling (#58726)
  • Improved Streaming Repartition: Improve streaming repartition performance (#58728)
  • Actor init retry: Add actor retry if there's a failure in __init__ (#59105)
  • Fused Repartition + MapBatches: Fuse StreamingRepartition with MapBatches operators to scale collate (#59108)
  • Combined repartitions: Combine consecutive repartitions for efficiency (#59145)
  • Prefetch buffering: Handle prefetch buffering in iter_batches (#58657)
  • HashShuffle block breakdown: HashShuffleAggregator breaks down blocks on finalize (#58603)
  • Backpressure tuning: Tune concurrency cap backpressure object store budget ratio (#58813)
  • Non-string ApproximateTopK: Support non-string items for ApproximateTopK aggregator (#58659)
  • Lance version support: Add version support to read_lance() (#58895)
  • Dashboard metrics: Add time_to_first_batch and get_ref_bundles metrics to data dashboard (#58912)
  • Iter prefetched bytes stats: Add iter_prefetched_bytes statistics tracking (#58900)
  • Configurable batching for iter_batches: Add configurable batching for resolve_block_refs to speed up iter_batches (#58467)
  • Improved dashboard metrics: Improve Ray Data dashboard metrics display (#58667)
  • Histogram percentiles: Update Ray Data histograms to show percentiles in data dashboard (#58650)
  • Deprecated API removal: Remove deprecated read_parquet_bulk API (#58970)
  • Block shaping option: Add disable block shaping option to BlockOutputBuffer (#58757)
  • Removed concurrency lock: Remove concurrency lock for better performance (#56798)

🔨 Fixes

  • Fixes to Unique: Fix support of list types for Unique aggregator (#58916)
  • Parquet NaN fix: Fix reading from written parquet for numpy with NaNs (#59172)
  • Hash Shuffle empty block: Fix empty block sort in hash shuffle operator (#58836)
  • Hive partitioning pushdown: Fix pushdown optimizations with Hive partitioning (#58723)
  • Object Store usage reporting: Fix obj_store_mem_max_pending_output_per_task reporting (#58864)
  • Pyarrow FileSystem serialization fix: Handle filesystem serialization issue in get_parquet_dataset (#57047)
  • Azure UC SAS: Handle Azure UC user delegation SAS (#59393)
  • Async UDF Thread Cleanup: Close threads from async UDF after actor died (#59261)

... (truncated)

Commits
  • 0de2118 [Data] Concurrency cap backpressure with tuning (Disabled) (#59519)
  • 1736619 [Data][Cherry-pick] Fix bug where AutoscalingCoordinator crashes if you req...
  • 3332314 add missing cuda 12.9 ray-extra (#59495)
  • b7d0c5b change version to 2.53.0 (#59487)
  • 0ddb7ee [core][rdt] Enable nixl for RDT Microbenchmarks (#59291)
  • 31a0e1e [Serve][3/n] Add router queue latency (#59233)
  • 22cda94 [train] removes single python ml build (#59465)
  • 8d9a15f [core] Revert server CreateCall creation change #55904 (#59448)
  • 694e6fd Revert "[Data] Fix DataContext deserialization issue with StatsActor" (#59458)
  • e0049dc [docs/data] Add download to key user journeys in documentation (#59417)
  • Additional commits viewable in compare view

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Bumps [ray](https://github.com/ray-project/ray) from 2.44.0 to 2.53.0.
- [Release notes](https://github.com/ray-project/ray/releases)
- [Commits](ray-project/ray@ray-2.44.0...ray-2.53.0)

---
updated-dependencies:
- dependency-name: ray
  dependency-version: 2.53.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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@dependabot dependabot bot added dependencies Pull requests that update a dependency file python:uv Pull requests that update python:uv code labels Dec 22, 2025
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